Modifications, hints, tips and technical information for the
AnyTone AT-D578UV

dual / tri band DMR digital mobile radio


 

Version 3.1 --- 25th May 2020

Updates made since the previous version are shown in this purple colour



This information is primarily intended for amateur ’ham’ radio operators who wish to maintain and adjust their AT-D578UV. Any regulatory authority approval (e.g. FCC certification) may become invalid by the use of this information. Users should always ensure that they and their radios are operating in accordance with their licence conditions. Many of these mods may also invalidate any manufacturer warranty you may have. In any case, the user alone accepts all responsibility and risk from the use of this information and tools provided here.




Page index:
Introduction

Band Error and four ways you can fix it

What is the difference between the AnyTone AT-D578UV and AT-D878UV?

Hint when using the programming software / CPS

Virus detected! Is the CPS software really safe to use?

Hint when using the microphone

Hints & tips for upgrading firmware

Trouble getting the drivers to install or work properly on Win 7 or 10

Strange error messages --- Band Error has it’s own section, click here

A website with lots of great hints & tips for the AnyTone DMR radio family

How do I reset the radio?

Compatibility of encryption

A remote mount head / display for the 578?

Custom engraved call sign labels for your radio

Differences between the two external speaker sockets

Microphone socket pinouts & information. New: Add a base microphone to your 578

Hint when using a Bluetooth earpiece

Custom background display files

Make your radio sound like a Motorola, or play with some other fun tone sequences

Using the address book to dial EchoLink nodes

Known button held during power up sequences

Selecting operational bands

Expanding RX frequencies New: modified firmware v1.08 for expanded RX now available to download

Receiver sensitivity & transmit output power measurements

What about fortuitous air band (118-136 MHz) reception?

Expanding FM band frequencies 76 to 121 MHz

Changing the display font / modifying some of the icons

Enabling full test / self adjustment mode

AnyTone Options software download

Programming password lock

FCC Part 90 approval information

A look inside the 578

A mod to improve the output volume of the 578 internal speaker

Replacing the SO-239 socket with an N-type socket

Add an internal GPS antenna to the 578

Improved cooling for the 578

General technical information

Flash memory structure in the 578

Flash Utility software

Backing up or restoring vital alignment & configuration data of your radio

Fix a frozen during boot up 578

Writing your own .CDD files

Updating the SCT3258 baseband / DMR codec firmware

Future developments & ideas




Introduction:
AnyTone’s AT-D578UV is a superb dual or tri band DMR & FM mobile radio. Anyone familiar with the AnyTone handheld 878 DMR handheld will instantly be at home using this radio. But the 578 is more than just an 878 crammed into a mobile radio case. Rated for 60 watt output on VHF and 45 watts on UHF, 4000 channels, 200,000 digital contacts, true simultaneous dual receive including dual same band RX, the 578 has been eagerly anticipated, and well worth the wait.

Presented here is a collection of modifications & technical information for the 578. Not all of these modifications are my own ideas, and credit has been given to the original author of the information as best as I have been able to find. Each modification is rated on a difficulty scale as follows:

Easy: no specialist skills required, easy soldering, minimal disassembly. If the thought of picking up a screwdriver makes you break out in a cold sweat, however, you might want to seek some assistance
Moderate: some skill required in soldering, electronics and/or computing, some disassembly needed. Any self respecting ham / electronics geek will be comfortable at this level.
Advanced: excellent soldering skills required, very good knowledge of electronics and/or computing, extensive disassembly.

If you have any more information or modifications that you’d like to share here, please contact me at vk7zja at gmail dot com and I will make sure you receive credit for your work, though you are welcome to remain anonymous if you wish.



Band Error and four ways you can fix it
Arrgh, the dreaded ’Band Error’. This happens when the codeplug you try to write to the radio doesn’t match the operational band the radio is set to. The radio has certain band limits that can be changed to suit local requirements, and this can be set to one of several options by the user. If the codeplug that you are trying to write to the radio doesn’t match that setting, this is the error you will see.
There are four ways you can correct this issue. Choose the one that best suits you:


Method 1: changing the band of the radio to match the codeplug file you are trying to write (easiest method)
  1. Download Colin G4EML AT Options software from: http://members.optuszoo.com.au/jason.reilly1/AT_Options.zip (17kb) and unzip it to a directory.
  2. Determine what band the codeplug is. Without the radio connected to the computer, open the codeplug .rdt file into the CPS software, and use menu Model then Model Information to display information about the codeplug. In the middle of the window will be ’Frequencys’ and next to that will be Mode with a number. This is your band number, write it down. Click on Cancel for now.
  3. Connect your radio to the computer with the programming cable now, and open AT Options software. Select your usual Com port and click Read.
  4. Next to Frequency, use the pull down list to select the band that matches the Mode number you wrote down earlier in step 2
  5. Click Write to change the radio band
  6. Back in the CPS programming software, you should now be able to write the codeplug .rdt file to the radio without a Band Error

Method 2: changing the band of the codeplug to match the radio (requires hex editing skills)
  1. Determine what band the radio is set to. Connect the radio to the computer with the programming cable and with the CPS programming software, read from the radio.
  2. In the CPS programming software use menu Model then Model Information to display information about what was read from the radio. In the middle of the window will be ’Frequencys’ and next to that will be Mode with a number. This is your band number, write it down. Click on Cancel for now and close down the CPS programming software.
  3. Convert the band number you wrote down into hexadecimal. As an example, if it is Mode 00015, 15=0F in hexadecimal. Write that down too.
  4. Now open your codeplug .rdt file in a hex editor, and look at the byte at address (hex) 0x0011. This is the byte that tells the CPS software what ’band’ the codeplug is. Change the value of the byte at address 0x0011 to the hex number you just calculated in step 3. Save the edited .rdt file under a new name.
  5. Start up the CPS programming software, load the edited .rdt file that you saved with a new name and send it to the radio.

  6. The red circle indicates byte 0x0011, which determines what band the codeplug is, change that data to 0E for band 14, or change it to 12 for band 18. Also note how the offset (address) shown in HxD indicates where your cursor is placed.

    Frank, KB2MXV, has made a nice YouTube video on the process of hex-editing your band byte. He’s using a different hex editor, so it will look a little different to the above picture, but the general process is the same. Take a look at: https://youtu.be/atMWu00_33U

Method 3: when all else fails, use this export all / import all method (most reliable method, but needs the most work)
  1. In the CPS programming software, open your codeplug.
  2. Use the menu Tool then Export and look at the top of the window that opens - there is an Export All button. Click it.
  3. Give your export a name, and click Save. This will export all your frequencies, contacts, zones etc etc to .csv files. This could take a few minutes with no apparent progress or activity especially if your digital contact list is large, wait until an Export Complete! message is shown
  4. There are some settings that are not exported, such as Optional Setting information, APRS and Encryption (if you happen to be using them). Go through and write down, take screen shots or take photos of these.
  5. Now connect the radio to the computer with the programming cable and with the CPS programming software, read from the radio.
  6. Use the menu Tool then Import and look at the top of the window that opens - there is an Import From File List button. Click it.
  7. Find the file you saved / exported in step 3 above, and click Open. This will import all your frequencies, contacts, zones etc etc to .csv files. This step can also take a few minutes to finish, wait until the Import Complete! message is shown
  8. Go through the Optional Setting / APRS / Encryption settings and restore all your settings as they were before, referring to your notes, screenshots or photos from step 4 above
  9. Save your newly rebuilt codeplug with a new name, perhaps including the mode number in the file name for easy reference
  10. Now write the fully rebuilt codeplug to the radio

Method 4: change radio bands to match codeplug via radio Test Mode menus (if enabled)
  1. Turn off the radio, then while holding down P4 key & pushing in the dial knob, power up the radio. Keep holding them until you see ’TEST MODE’ on the screen, and release the keys. If this is not displayed, then this method will not work for you.
  2. After the radio has fully powered up, you should see MODE:000xx on the screen. If you don’t, use the up/down buttons until you do.
  3. Then rotate the dial knob to set a new MODE value to match the codeplug you are trying to send to the radio, and simply turn off the radio to set that value.
  4. After turning the radio back on normally, you should now be able to write your codeplug to the radio



What are the differences between the AnyTone AT-D578UV mobile and AT-D878UV handheld?
From a features viewpoint, the D578 has some extra functionality over and above the D878, such as:
  • True 220 MHz operation, for the AT-D578UV PRO III. The 878 can only really be used for RX only in this part of the band.
  • True simultaneous dual receive, even in the same band. While the 878 can display two VFOs, it’s receiver only toggles between the two quickly. The 578 has two independent receivers so you can receive two FM signals at the same time. (However, only one DMR signal can be received at a time)
  • Obviously, higher RF output power, 60 watts on VHF and 45 watts on UHF
  • Analogue inversion scrambling is featured on the 578
  • Crossband repeater function, analog to analog, analog to DMR or DMR to DMR
  • The 578 uses an external GPS antenna, which is is included if you purchase a GPS equipped model of the 578
  • The 578 has more internal memory installed, so more complex features and larger digital contact list will be possible in the future



Hint when using the programming software / CPS
When making changes or additions in the programming software, the changes or program additions you made don’t automatically ’take’ when you close the window. You must first select the ’OK’ button then close the window. This has caught me out several times, and though it might seem obvious when reading this, it is easy enough to overlook when slaving over your keyboard.



Virus detected! Is the CPS programming software really safe to use?
Some people have had a virus alert raised by their anti-virus software, declaring a quite specific virus when trying to download or install the CPS programming software. So is the software really safe to use? Yes, without doubt it is absolutely safe. There is no virus, this is a so-called ’false positive’ where the anti-virus software incorrectly thinks there is a virus present. This happens because the anti-virus software writers are basically lazy, their rationale is: we’ve never seen this executable before, therefore it must be unsafe. They do no intelligent analysis of the executable at all, and err on the side of paranoia. It’s obvious that this is the case as each different anti-virus software declares a different specific virus has been found, which can’t possibly be the case, if they were genuinely accurate findings.
So what can be done? Some anti-virus software can have exceptions made, while others can be temporarily disabled while you install the software. You will be safe, thousands of others have used the software, and to the very best of my knowledge no-one’s PC has yet been infected by the CPS software.


Hint when using the 578 microphone
Ever wondered why the up / down buttons on the top of the microphone don’t work? The answer is simple: the slide switch at the side of the microphone must be in the up position for these to work. It’s caught me out several times!



Hints & tips for upgrading firmware
Upgrading firmware on the AnyTone 578 is easy, so long as you follow these general steps:
  1. Under the original firmware, before you do any upgrades, export everything (Tool > Export > Export All)
  2. Power off the 578, and then quickly hold down the MENU and EXIT keys, and ensure the red LED is flashing. Upload the new firmware using the CPS software menu Tool > Firmware and Icon Update
  3. RESET the radio - this step is very important!
  4. If there is a baseband update with the new firmware release, do this now. Power up the radio while holding the MENU and dial buttons down until the message "This is Boot Mode for SCT!!!" is displayed. Use a freshly installed version of the SCT_PORT Host Controller software on your PC to send the new SCT3258 hex file to the radio. Older versions of the SCT_PORT Host Controller software may not be able to load all the required information, despite giving no error or other failure indication
  5. If there is an icon update with the new firmware release, do this now. Power up the radio holding the P1 and dial buttons down until the message "UPDATE MODE" is displayed. Upload the new icon file using the CPS software menu Tool > Firmware and Icon Update
  6. Install new version CPS
  7. Go to Tools > Options and tick the GPS / Bluetooth / 500 Hours record / APRS options as they may apply to your radio.
  8. Now read from the freshly reset radio (yes, you are reading a ’blank’ radio, that is OK)
  9. Import everything saved from step 1
  10. Finish off your codeplug by attending to the Optional Settings and confirm all is correct
  11. Send the freshly rebuilt codeplug to the radio
  12. If you had a custom start up picture or background pictures, send those to the radio now
  13. Finally, save the codeplug and ensure you use this saved file as the basis for any further changes you may make
Yes, the thing will work with last firmware version’s codeplug, but strange things can & do happen. Laggy transmit and other miscellaneous issues have all been fixed by a fresh codeplug rebuild - a process made a lot easier with the export & import features of the software. Take the time to do this to ensure the best result.



Trouble getting the drivers to install or work properly on Win 7 or 10
(Credit to Carsten Bauer VK6PCB, Chris Pyle & Duane Reese)
Some people have had problems with the drivers AnyTone / GigaDevice supplies to get the USB communicating with the radio when using Windows, especially Windows 10. Check these solutions to see if they can help you:
  • If you have troubles with what Windows installs by default, create a Windows restore point first (just to be safe) and then download and update to the latest GD32 drivers here: http://www.connectsystems.com/products/top/radios/DS878UV_SOFTWARE/GD_VirtualComDriver%20v2.0.2.4944.zip (921kb) then select the x64 folder for 64 bit Windows, or x86 for 32 bit Windows operating systems
  • Win 7: when Windows starts, hold F8 to get into the ’advanced boot options’ and select ’Disable Driver Signature Enforcement: Loads installed software that has invalid or missing signatures.’
  • Win 10: Press and hold the shift key on your keyboard and click the Restart button. Select Troubleshoot > Advanced options > Startup Settings and then click the Restart button. When your computer restarts, you’ll see a list of options, press F7 to select Disable driver signature enforcement. Once the computer restarts, go and install the AnyTone driver.
  • Out of date or invalid usbser.sys system file in c:\windows\system32\drivers folder can also cause problems. Find a new version 6.1.7601.17xxx of usbser.sys, and manually copy it into your system32 drivers folder after booting into MS DOS mode, and restart the computer.
  • Some computer’s USB controllers can have trouble detecting the USB connection to the 578 if the radio is connected via it’s programming cable while turned off, then turned on after the cable is connected. If you find you have this problem, try plugging in the USB cable into the PC while your radio is powered up. Normally that’s a big no-no, as you can induce spurious transitions on the USB data lines which can lead to strange things happening. In this case it can result in a successful connection! The working theory is that it is some PC USB controllers might be too impatient waiting for the radio’s USB to respond while it is busy booting up, but if it’s already powered up the radio MCU responds quick enough to keep finicky PC USB controllers happy.




Strange error messages

Band Error has it’s own section, click here to see four different methods on how to fix this problem.

If you see something similar to this error message, it means you are trying to load a newer codeplug file than what your CPS software version can handle.

If you are getting this cryptic error message when trying to read or write to your radio, it means that your PC programming (CPS) software isn’t the same version firmware as what is on your radio. Always make sure you are using matched versions of CPS and firmware.

This error means your codeplug has become corrupt in memory. All you need do is perform a reset on the radio and reload the codeplug.

This error is a little more serious. A similar error message is ’Bad Block.’ Try the following, in order:
  1. Reset the radio and then reload the codeplug
  2. If that did not work, reset the radio, reload a fresh copy of firmware and icons, perform another reset, and then reload your codeplug
  3. If you happen to have a backup image of your flash memory, especially of the critical area at addresses 02F00000 and 02FDFFFF, then use the instructions below on writing your own CDD file to restore this image to your radio flash memory. Alternatively, you can use the defroster packs toward the bottom of this page to refresh your flash memory, though you will still need to have a backup of your critical area data first.
  4. In the very worst case, this could indicate hardware failure of the flash memory, a fatal problem that can not be recovered from

This error, or ’RTC ERROR!’ or ’RTC not run!’ means that, for what ever reason, the radio can not read the Real Time Clock. There is a pair of tiny internal batteries that backs up the Real Time Clock and keeps time when the radio is turned off. If either battery becomes too old, or goes faulty, you may see this error. If you continue to ignore this error message and the battery becomes so bad that it short circuits itself, then that could start to induce other new random errors such as the radio freezing up, not accepting any codeplug or firmware updates, and finally becoming completely unresponsive. A short circuit battery will drag down the microprocessor voltage supply, causing these random failures. The RTC backup battery can be replaced by getting access to the bottom side of the PCB and desoldering the old battery and replacing it with a new MS412 3 volt lithium battery - just make sure you get a MS412 already fitted with solder tabs. After fitting, a reset of the radio, setting the time & date and reprogramming the codeplug should set everything right.

Not really an error message as such, if you are seeing white blocks being displayed instead of an icon after you have made a firmware update, this means you need to also need to do an icon update to the radio. So far, the 578 has not had an icon update issued, but if you still find white squares appearing on the 578, you can use the latest 878 Icon file: find Icon V1.20 update as part of the 878 V1.11 firmware update package. Once you have downloaded the package and located the Icon Update folder within, you send the icon .spi file to the radio by using the CPS menu selections Tool > Firmware and Icon Update.



A website with lots of great hints & tips for the AnyTone DMR radio family
(Thanks to Norman M6NBP and lots of others who contributed)
If you can’t find the answer you are looking for here, then this website is a real goldmine of information. It is the accumulation of many user’s experiences, hints and tips for all of the AnyTone DMR radio family. Take a look at:
http://hamradio.joomla.com/anytone-dmr.html



How do I reset the radio?
To reset the radio, turn it off, hold down the P2 button and dial knob, and press the power button, and keep holding those buttons while turning the radio on. Within two seconds you will see on the display ’Are you sure you want to Initialize radio?’. If you are sure you want to carry out the reset, press the MENU key and the radio will be reset, or press EXIT key to abort and not reset the radio.




Compatibility of encryption
Starting at firmware version 1.03, there are two voice encryption types available on the 578.
First is AES (Advanced Encryption Standard) which is definitely compatible with Motorola and Hytera products that also have AES enabled. To set this sort of encryption and have it successfully communicate to another AES encrypted radio you need to:
  • Ensure the radio is updated with baseband version SCT3258 V2.01.07BA; AES was not available on earlier versions
  • Go to Options > Other > Encryption Type set to AES
  • Program in the encryption keys under menu ’AES Encryption Code’ using the same key ID index (Encryption ID) and key value as other radios programmed with AES encryption
  • If the key value has less than 64 hex characters, you need to pad out the key with leading zeros
  • Finally, in each channel you want to encrypt, select the required key ID index number in the ’AES Digital Encryption’ setting for those channels.
  • Note that SMS messages are not encrypted, so be aware of this.
The other encryption type is called ’Common’. This encryption system is set up slightly differently:
  • Go to Options > Other > Encryption Type set to Common
  • Program in the encryption keys under menu ’Encryption Code’ (not AES Encryption Code) using the same key value
  • Finally, in each channel you want to encrypt, select ’Digital Encryption’ setting to on, and select ’Encryption TYPE’ to be the same as other radios in the communication group
You can only select one type of encryption in the 578 at a time: either AES or Common (Normal or Enhanced), not both at the same time. Also, encryption obviously only works on DMR digital channels.
Regarding compatibility, as already mentioned, AnyTone AES encryption is compatible with Motorola & Hytera AES encryption.
With the ’Common’ encryption - either in standard or enhanced mode - this is only compatible with other AnyTone 578 and 878s with the same settings. It is not compatible with other Chinese brand radios encryption, and it is not compatible with Motorola Basic Privacy or RC4 Enhanced Privacy.
The AnyTone radios will never be able to be compatible with Motorola Basic Privacy because that is a proprietary system that Motorola would not permit others to copy; and will never be compatible with RC4 Enhanced Privacy because the SCT3258 is physically unable to process DMR in the same way necessary to enable that particular encryption system.



What about a remote head / display for the 578?
You may have noticed that there is no mention about a remote or removable head or display unit for the 578. AnyTone do have a solution under design now: rather than remote mounting the display, they are planning a BlueTooth remote microphone & control unit in one, complete with it’s own LCD display. There is no ETA on this microphone / control unit as yet, but if you keep an eye on the AnyTone related Facebook groups, it is likely to be announced there first. Here is an artist’s rendition of what the microphone might look like:


There might also be the possibility of a genuine remote head / display mount option. There is only the one flat ribbon cable connecting the display unit to the radio main body (the little coax cable connects to the GPS SMA connector; this could be replaced with a GPS antenna in the display unit as it has provision for it See:
Add an internal GPS antenna to the 578), and if someone were able to source an equivalent 40 pin ribbon cable of a few feet in length and 3D print some backing plates to securely mount the display unit... who knows? It may be possible.




Custom engraved call sign labels for your radio
Thanks to Greg KC8GL, you can order a custom laser engraved self adhesive label for your radio that perfectly fits the AnyTone 578 microphone, at a very attractive price. Greg recommends using a black magic permanent ink marker pen to run a line of ink around the white edge of the labels to help hide the white substrate, touching off that professional look once the label is installed. Also check out the lovely cherry wood callsign display plaques that Greg does. I highly recommend them! Greg is a fantastic guy, quick to respond and happy to answer any questions you may have. See his website at:
https://sites.google.com/view/kc8gl/d578uviii-pro-microphone-call-sign-sticker

Another product that Greg has will be of particular interest to 578 owners. If you have trouble remembering what all the programmed functions go with what button, this is going to be perfect for you. Now you can banish the hand scribbled sticky note you keep by the 578 to remind you of what button does what! Greg has a special web page set up for this very professional sticker at: https://sites.google.com/view/kc8gl/anytone-578-p-button-cheat-sheet




External speaker socket differences on the AT-D578UV
The below photo shows the difference between the two 3.5mm extension speaker sockets. The socket closest the GPS SMA antenna is for an external speaker which will disconnect the 578 internal speaker, while the other socket will keep the 578 internal speaker connected, and both speakers will be active.




Microphone socket pinouts & information AT-D578UV

It is now possible to wire up a base microphone to the 578. PTT is enabled by connecting pin 1 & 8 on the microphone socket by a 2.2K ohm ot 1.0K ohm resistor via your PTT button, and you will also need to make the following setting in the CPS: Other > HandOpMode set to Level Detection, as seen below here:

Do not use a PTT resistor less than 1.0K ohm, as this could damage the radio.
Use a 1uF non-polarised capacitor to connect your microphone into pin 6, as there is some DC voltage present here.
If you need bias voltage to drive an electret condenser microphone, obtain this from pin 2 via a limiting resistor. Start with 100K ohms or even 470K ohms for this purpose and lower the value for more gain if necessary. Each microphone insert will be unique and will require experimentation with resistor value to obtain the correct bias.
It is not possible to have both microphones connected, or have some sort of switchable tee piece to be able to switch between the two. You can’t even manually swap between the two types of microphone unless you change the CPS setting first - if you leave the setting in Level Detection with the normal microphone connected, not only will the microphone or any of it’s buttons not work, but it will also randomly send the radio into transmit.



Hint when using a Bluetooth earpiece
From Martin G8FXC comes a hint about using a Bluetooth earpiece. He tested a Jabra Bluetooth earpiece which has a feature where the user can redial the last called number by double tapping on the ’answer’ button when used with a cell / mobile phone. When this was paired with the 878, it was found a double tap on the answer button would send the 878 into transmit, and a single tap would return to receive. Martin says he has tried a few different headsets and the only types he found that do this are the Jabra makes with a double tap to answer feature. It has also been found that the Plantronics M25 earpiece also works in this way. If you have a Bluetooth headset or earpiece with a similar feature, give it a try, it might work with your radio in the same way.



Custom background display files for your AT-D578UV
Tim DL2DMC has made available some very nice looking background display files for download from:
http://www.geoo.de/AnytoneDL/D878UVscreens.zip
While these are intended for the 878, they will also work on the 578 too. If you have made your own background display image and would like to share it with others, please get in touch with me by email and I will place it here for everyone.


Chris 2E0UKH has made a video preview of these backgrounds and shows you how to upload them to the 878 - the process is practically identical for the 578 too. Take a peek at his YouTube video here: https://youtu.be/tPMhNEPVgjw



Make your radio sound like a Motorola
You can set up your radio so the transmit permit tone sounds like that of a Motorola DMR radio.
Use these settings under Optional Setting > Alert Tone to give the distinctive MotoTRBO DMR chirp:
1st tone = 1570 Hz for 50ms (due to a current bug, this tone needs an extra 10ms more than necessary)
2nd tone = 1050 Hz for 40ms
3rd tone = 1570 Hz for 40ms
4th tone = 1320 Hz for 40ms
5th tone = 0 Hz for 0ms
Now when you press the PTT button the actual sound produced by the speaker is identical to the Motorola Transmit Permit Tone.

From Steve WA7PTM comes a fun tone sequence to try. You can use this for the Call Tone, Idle Channel Tone or Call Reset Tone, completely your choice.
1st tone = 1175 Hz for 200ms
2nd tone = 1319 Hz for 200ms
3rd tone = 1047 Hz for 200ms
4th tone = 523 Hz for 200ms
5th tone = 784 Hz for 200ms
Now you’ll hear the famous melody from Close Encounters of the Third Kind movie.

Or how about the melody Manah Manah made famous by The Muppets?
1st tone = 1397 Hz for 150ms
2nd tone = 1760 Hz for 150ms
3rd tone = 1976 Hz for 50ms
4th tone = 1568 Hz for 50ms
5th tone = 1318 Hz for 50ms



Using the address book to dial EchoLink nodes
Courtesy of Klaus DL5MCC
EchoLink is a system that allows amateur radio operators to communicate with one another via EchoLink ’nodes’ that are connected together by the internet. A regular analog FM radio is used to access each node. To connect to a certain node via a FM-Simplex Link (-L) or -Repeater (-R), you dial the node number just by transmitting the node number you wish to connect to using DTMF-tones. Described here is a method of using the analog address book to store, recall and dial node numbers at the touch of a button.
  1. First, in the CPS, go to Analog > Analog Address Book and add in each node you might want to be able to quickly recall / dial. The node number goes in the Number column, and the node name / callsign goes under the Name column. This name is what you will see on the radio screen, so it can be given any name that is meaningful to you.
  2. Then, in Analog > DTMF Setting, set the following:

    It is recommended to switch off the side tone, as otherwise you will hear the DTMF tone while transmitting, with full audio level (which could be annoyingly loud).
  3. Next, in Optional Settings > Other, set your Address Book Is Sent With Its Own Code to off.
  4. The final step is to go in to each channel that is programmed that you will use to connect to your local EchoLink node, and ensure that Optional Signal is set to DTMF.

In use, to connect to an EchoLink node, select the frequency / channel of a nearby FM-Echo-Link Node (-L) or -Repeater (-L). Then press List (red button) and select the entry, you intend to call. With the desired entry highlighted, just press and hold PTT while the sequence of DTMF is transmitted.
Please note, that only DTMF-numbers can be stored in the analog address book. Any other characters (ABCD*#) required to control a link, must be entered manually by the keypad.



Known button held during power up sequences
There are several power up sequences which involve holding down buttons to invoke certain modes on the 578 as follows:
  • Press MENU and EXIT keys together just after power OFF for main firmware update mode (red LED blinks)
  • P1 and dial held down on power up enters a display icon update mode
  • P2 and dial held down on power up enters the reset menu
  • P3 and dial held down on power up enters a GPS module test mode
  • P4 and dial held down on power up enters the TEST MODE where you can select operational bands ("modes") and/or adjust alignment parameters, but only if this has been first enabled by AT Options software
  • P5 and dial held down on power up enters test mode with BTH (Bluetooth) turned on
  • MENU and dial held down on power up enters the DSP SCT update mode
  • EXIT and dial held down on power up enters a GPS signal strength (RSSI) test mode
The test mode (P4 + dial) has three levels of access:
  1. Normally, test mode will be completely inhibited as delivered by the factory
  2. With ’band select’ test mode, you will only be able to select MODE to change operational frequency bands of the radio
  3. In full unlocked test mode, some degree of calibration / alignment is possible from the front panel of the radio for deviation levels, power output levels, received signal strength indication (RSSI) levels, squelch levels, frequency fine setting and more.
See the section below titled
Enabling full test / self adjustment mode for more detail.



Selecting operational bands
There are many different choices of bands that you can select to use, which may change depending on firmware version.

Note that whenever you do change MODE, the radio will reset and you will lose your programmed data. Make sure you have a saved copy of your codeplug. Each saved codeplug will have the MODE it was created under encoded within it. If you try to reload the same codeplug after changing MODE, the CPS software will reject it, saying that it is the wrong band. To fix this, you will need to ’hex edit’ the codeplug rdt file: change byte 0x0011 to match the MODE selected. For example, if you set MODE=00002 then edit your codeplug byte 0x0011 to be hex value 02. Or if you set MODE=00010 then set codeplug byte 0x0011 to hex value 0A.

Begin by turning the radio off, then press and hold the P4 and dial buttons down while turning on the radio, hold those two buttons until you see ’TEST MODE’ appear on screen. After releasing the buttons the radio will start up with the text ’MODE:00000’ to the bottom of the screen
If you don’t see this screen, you will need to download AT Options software and enable ’Band select’ check box & write this back to the radio. See:
Download AT Options software
Rotate the top dial to change the mode number, which will select the following:

Standard MODES selectable 578:
Mode 578 v1.07 RX 578 v1.07 TX
0 400-480 & 136-174 400-480 & 136-174
1 400-480 & 136-174 (12.5k only) 400-480 & 136-174 (12.5k only)
2 430-440 & 136-174 430-440 & 136-174
3 400-480 & 136-174 430-440 & 144-146
4 440-480 & 136-174 440-480 & 136-174
5 440-480 & 144-146 440-480 & 144-146
6 446-447 & 136-174 446-447 & 136-174
7 400-480 & 136-174 420-450 & 144-148
8 400-470 & 136-174 400-470 & 136-174
9 430-432 & 144-146 430-432 & 144-146
10 400-480 & 136-174 430-450 & 144-148
11 400-520 & 136-174 400-520 & 136-174
12 400-490 & 136-174 400-490 & 136-174
13 400-480 & 136-174 403-470 & 136-174
14* 400-520 & 136-174 & 220-225 400-520 & 136-174 & 220-225
15 420-520 & 144-148 420-520 & 144-148
16 430-440 & 144-147 430-440 & 144-147
17 430-440 & 136-174 136-174 only
18 400-480 & 136-174 & 220-225 420-450 & 144-148 & 222-225

* MODE 14 is not directly selectable, you first need to enter a password to enable this band. When MODE and the band number is displayed, press any number on the keypad and the radio will ask "INPUT PASSWORD:" if you happen to know what this password is, enter it, and then you should be able to select MODE 00014. Then turn off the radio, which will save your selected mode setting, and from that point on, your radio will use the frequency limits that correspond with the mode setting you selected. You can repeat the process to change MODES at any time.
The bands that are indicated in grey above are not directly selectable via the test menu MODE selection. You can use AT Options application to select one of these hidden bands if you require.

I will not be sharing the password for MODE 00014 under any circumstances, as the FCC is starting to closely scrutinise these matters and we don’t them to revoke the approval status for these wonderful radios, which would result in the AnyTone radios being withdrawn from sale, then nobody would be able to enjoy them.
For the vast majority of users, there is no need to use MODE 00014 anyway. The alternate firmware files available at expanded RX frequencies with alternate firmware will permit out of band reception under any MODE selection, making MODE 00014 mostly redundant. If you have a genuine requirement for MODE 00014, then please see your dealer.



Expanding RX frequencies Easy
As delivered by the factory, the radio receiver covers 136-174 MHz, 400-480 MHz and 220-225 MHz. There are countries around the world that make use of the radio spectrum above 480 MHz for two way radio, and this modification will allow you to hear those transmissions. TX is intentionally inhibited in these expanded areas. The modification only opens up the radio hardware, some tricks are still necessary to program out of band frequencies with the software.



To carry out this modification do the following:
  1. Download the frequency expanded / modified 578 firmware package:
    http://s000.tinyupload.com/index.php?file_id=09596362087737060814 (556 kb)
  2. Unzip the package
  3. Make sure you have saved your codeplug (rdt) configuration file
  4. Using the regular firmware updating software & process, send this frequency expanded firmware to the radio.
  5. If necessary, update your codeplug / rdt configuration file to be compatible with the version of firmware you have downloaded. If you want to reuse your saved codeplug rdt configuration file, you may need to modify one byte with a hex editor as detailed below
  6. Enjoy actual extra receive frequency coverage of around 110-281 MHz, and 339-527 MHz (varies from individual radio to radio)
Your mileage may vary of course, due to individual radio & component manufacturing tolerances. You can use the VFO and add memory channels to use these new expanded receive frequency ranges. Note that with the expanded frequencies, you can’t enter frequencies via keypad direct entry that start with a 3 or 5 (e.g. any frequency in the 300 or 500 MHz range) the only way to get to them is via lots of knob twisting in VFO mode.

To enter out of band frequencies in the CPS programming software, you will need to use the export-edit-import method: program some dummy channels with valid but easy to recognise frequencies, for example 456 MHz, then use the export feature (tool > export > channel > give it a name > export) and save your exported channels. Open the exported channels file with a text editor - look for your dummy channels you had previously entered, and edit the frequencies as you require, and save the file. Back in the CPS software, use the import feature (tool > import > channel > find your edited csv file > import) to bring the channels with out of band edited frequencies into the radio.

Transmit remains standard according to each MODE. Note that out of band receive frequencies can be very low in sensitivity due to the excellent front end filtering of these radios.

Refer to the sensitivity plots below:

578 receiver sensitivity



These measurements were all made in Narrowband FM mode. Wideband FM results are 4dB higher. DMR sensitivity is listed as being -117.4dBm for BER 5% and -110dBm for BER 1%

Summary: 0.18uV VHF // 0.28uV 220 MHz // 0.20uV UHF for 10dBQ (approximates 12dB SINAD) Narrowband FM.


If you are wondering about the sensitivity measurements that are off scale of the above graphs, here are those results for 10dBQ:
110MHz= -34dBm; 115MHz= -22dBm; 120MHz= -49dBm
270MHz= -58dBm; 280MHz= -44dBm; 340MHz= -46dBm; 350MHz= -49dBm; 360MHz= -52dBm; 370MHz= -56dBm; 380MHz= -59dBm; 390MHz= -67dBm


Transmit RF power output

with thanks to Sergei for these measurements
Test frequency Low Mid High Turbo
145.5 MHz 1.2 10 25 58
225.0 MHz 1.5 6.0 6.0 6.0
435.0 MHz 1.1 11 26 43
While these power measurements were taken in analogue FM mode, they will be accurate for DMR as well. Note carefully that unless you have special power measuring test equipment, able to read peak pulse power with a duty cycle correction factor of 0.4615, then your simple power meter will not be able to correctly measure power output in DMR transmit, it will read much lower than the actual figure.




What about fortuitous air band (118-136 MHz) reception?
On the AnyTone 868 & 878, partial air band reception is possible when using modified firmware, with strong signals at least. Yes, the receiver is still FM and air band signals are AM, but by tuning just slightly off centre the AM signal can be resolved and heard, though with a little distortion.
So with the 578 able to quite happily tune down to 110 MHz with modified firmware, this should make it ideal for ’fortuitous’ air band reception, right? Unlike the 868 & 878, the mobile 578 appears to use a different RF transceiver chip, and unfortunately reception of AM signals in FM mode on the 578 is just too distorted to properly receive air band signals.
But all is not lost for those wanting to hear the air band on the 578. AnyTone have made provision on the PCB for extra components to be added to the 578 to give real AM reception. This will hopefully be coming in a future model of the 578 called the AT-D578UV PLUS model; it won’t be a plug in module that the user can add at a later date. This feature is currently under development by AnyTone, so keep an eye out for news from your dealer or the AnyTone Facebook groups.



Expanding FM band frequencies 76 to 120 MHz Easy
The present firmware version only permits FM band VFO tuning from 87.5 to 108 MHz. The software however, permits entry of frequencies from 76.0 to 108.0 MHz for memories in the FM band. This is the easiest way to get the 578 to tune down to 76 MHz - put those frequencies into a FM band memory channel. Tuning below 76 MHz isn’t possible at this stage as the RDA 5802 needs to be set up differently to go below 76 MHz. But going up past 108 MHz is possible, - though I’m not sure why you’d want to. Reception of air band transmissions using wideband FM, even with a very strong AM signal, is impossible. But, if you have the need to, I found that my 578 was able to receive test signals all the way up to 120 MHz. Entering such frequencies is quite easy, all you need to do is to enter some ’dummy’ channels, and then using the Tool > Export menu in the CPS programming software, export your FM channels and open the file with Notepad for editing. Change the frequencies of the dummy channels you entered and save the file, then use the Tool > Import menu in the CPS programming software to import your edited file. This way you can enter any FM frequency, in 50 kHz steps, between 76.00 and 120.00 MHz. You can edit and import frequencies outside these limits, but the receiver won’t actually work properly beyond those limits.



Changing the display font / modifying some of the icons Advanced
(Credit to Colin G4EML & Ronan EI4KN - the ’font master’ hihi)
Would you like to change the display font on your 578, and don’t mind getting your hands dirty with a hex editor and a few other tools?
There are six different fonts encoded into the 578 firmware .CDD file. The location within the firmware file at which the fonts are encoded will change from version to version. Therefore, the first thing you need to do is identify exactly where the fonts you want to replace are located. To make this job easier, Colin G4EML has created a small executable which allows you to graphically view a file as a bitmapped image. You can download it here:
http://members.optuszoo.com.au/jason.reilly1/ImageTest.zip (15kb)
Be aware that the bitmapped icons and fonts are vertical raster, not horizontal. It could take a lot of scrolling through the file to identify the font, but the auto step feature makes life a lot easier.
In the 578 firmware, there are six font sizes: 7x10 H x W starting at 0x08CEDF; 8x8 H x W starting at 0x08CF7C; 12x12 H x W starting at 0x08D16E; 16x16 H x W starting at 0x08DA5E; 24x11 H x W starting at 0x08E641; and a super large 24x16 font starting at 0x08F376. Other symbols such as the antenna signal meter etc. will be found starting at 0x08FBC8. These addresses / locations are only valid for firmware version 1.05, the exact locations will change a little in other versions.

Once you find the location of the font you want to play with, make a note of its starting location. Now you’ll want to create a font of the same size. A very useful tool to convert fonts from your computer into bitmaps is Rays Font Editor which you can download here:
http://www.rayslogic.com/Software/RaysFontEditor/RaysFontEditor_24Aug12.zip (3.0 Mb)

Make sure you convert the font to the same size as the one you are going to replace. To use Rays Font Editor to produce a bitmap ready for the 578:
  1. Install your desired TTF font as a system font on your PC
  2. Select Capture System Font, then select your desired font from the list
  3. Select input size by point, and play around with the value to get each character fully visible. Typically the letters M and W are difficult to fit width wise and get truncated at the sides, and lower case letters g, j, p, q and y can get cut off at the bottom: try smaller point values to get the font small enough to fit or manually tweak the problem letters yourself. As an example, the Courier New TTF font works well if imported at 10 point size
  4. Select Output character size - Change font size and enter height and width to suit the font you are replacing, and click OK
  5. Examine your characters that have been imported to make sure they all fit nicely and are fully legible. You can edit the appearance and shift characters up/down/left/right to make them look nice.
  6. Select Font settings, and choose character range starting at 32 and ending at 126, as those are the only characters the 578 needs
  7. Select Export font. You want to select ’custom’, format is binary file, scan direction set to start top-left, scan vertical and leave the other settings as they are. Give your font a name and save it
  8. Rename the extension of your font from a .dat to .bin and you have a file that’s ready to go into the 578.
Once you have a binary image of your desired font, you might want to use Colin’s ImageTest application to examine the fonts and confirm how they’ll appear on the radio screen.
Now it is simply a case of using your hex editor to copy this binary data from the file you just created over the top of the font data in the firmware file, at the start address you noted earlier. If using HxD, use paste write, not paste insert when copying your new font binary data into the firmware image. Write the firmware to your 578 and enjoy a new look display.

Multi-coloured icons, other than the basic mono-chromatic symbols, are mostly stored in the 578 flash memory locations 0x0015A000 to 0x00200000. The 578 currently uses the same icons as the latest 878, and so you can use the 878 Icon V1.20 update as part of the 878 V1.11 firmware update package to write to those memory locations. As a result, if you want to play with custom icons, it is easiest to edit a copy of the 878 icon file called D878_1G_ICON_V1.20_20190226.CDD if you want to customise some of your coloured icons. They are encoded as RGB565 raw bitmap format, and of varying sizes. You could use a raw bitmap viewer to explore the contents of the icon update file. A good website to do this is located at: http://rawpixels.net/
For full screen bitmaps such as the start up image, select a width of 128 pixels, height of 160 pixels, select Flip V, select Predefined format of RGB565, and make sure Little Endian is not selected. For other icons you will need to play around with the width and height, but should use the same settings.
A few other coloured icons are encoded into the firmware image, the main one there being the 11x11 digital monitor speaker symbol.




Enabling full test / self adjustment mode Advanced
(Credit to Colin G4EML and Jason VK7ZJA)

Warning: you can seriously mess up your radio with this adjustment mode to the point that it may not transmit, receive, or even have a visible display with careless changes to certain values. If you do not know what you are doing, leave this alone.
There is a way to enable the full test mode menu on the radio so you can not only alter the operational bands, but also things like setting Turbo, High, Mid & Low RF output power levels individually, fine tune the frequency, set the tight squelch values, change the received signal strength S-meter (RSSI) meter curve, even calibrate the battery voltage readout.

Begin by connecting your radio to the CPS software and take a screenshot of, or write down the information shown in the ’Local Information’ screen. This is very handy information to keep. Also ensure you have saved a copy of your current codeplug
Colin G4EML has created an application called AnyTone Options, which will allow you to enable the full test mode, enable a programming password (more about this below) and to edit other text such as the dealer you purchased your radio from, or any maintenance notes you might like to add. For example, you can enter your name, phone number and callsign in this text area in case your radio is stolen.
Download AnyTone Options application from here:
http://members.optuszoo.com.au/jason.reilly1/AT_Options.zip (17kb) *As always, this software is provided without any warranties, and you use it entirely at your own risk. Using this application to write any changes to your radio is also likely invalidate the manufacturer’s warranty
(The application is also suitable for the AnyTone 878 & 868, Btech 6X2 and Alinco DJ-MD5)

When you run the software, select your COM port and READ from the radio. Then edit any text fields you may want, and make sure Band Select and Full Test Mode check boxes are ticked. Finally, WRITE the settings back to the radio - this only takes a fraction of a second to do, and the radio will reboot. It may take a few extra seconds more than normal to boot up, this is OK as it is reconfiguring internal memory.

To activate test mode, turn off the radio, hold down the P4 and dial buttons while turning on the radio until TEST MODE is displayed on the radio screen (this takes a few seconds to happen), then let the two buttons go. The radio will boot up into it’s full test / self adjustment mode.
Once you start test mode, scroll up and down between different test adjustment points using the zone up/down button. The following adjustments are available:

I strongly recommend you go through each setting and write down what they are before making any adjustments
578 Setting Adj. range Description Typical value
1 UHF AL nil A-VFO Low UHF test frequency
2 UHF AM nil A-VFO Mid UHF test frequency
3 UHF AH nil A-VFO High UHF test frequency
4 VHF AL nil A-VFO Low VHF test frequency
5 VHF AM nil A-VFO Mid VHF test frequency
6 VHF AH nil A-VFO High VHF test frequency
7 UHF BL nil B-VFO Low UHF test frequency
8 UHF BM nil B-VFO Mid UHF test frequency
9 UHF BH nil B-VFO High UHF test frequency
10 VHF BL nil B-VFO Low VHF test frequency
11 VHF BM nil B-VFO Mid VHF test frequency
12 VHF BH nil B-VFO High VHF test frequency
13 FQCA 0-255 A-VFO Frequency fine tune 41 *
14 TXDAU 0-255 Unknown UHF analogue adjustment 150
15 PAHU 0-255 UHF RF power output turbo setting 207
16 PAMU 0-255 UHF RF power output high setting 182
17 PALU 0-255 UHF RF power output medium setting 154
18 PASU 0-255 UHF RF power output low setting 112
19 MODU 0-255 Overall deviation setting for UHF 105
20 MIC 0-63 Microphone gain set 54
21 TONEU 0-255 Transmit audio tone level, push PTT to transmit a test 1000 Hz tone on displayed UHF FM frequency 98
22 TONEV2 0-255 Transmit audio tone level, push PTT to transmit a test 1000 Hz tone on displayed VHF FM frequency 40
23 CTCW 0-128 Deviation setting for CTCSS in both UHF & VHF 39
24 DCSW 0-128 Deviation setting for DCS in both UHF & VHF 28
25 BPFLUA 0-255 UHF A-VFO receive tracking gain, low end of band 35
26 BPFMUA 0-255 UHF A-VFO receive tracking gain, mid band 135
27 BPFHUA 0-255 UHF A-VFO receive tracking gain, top end of band 253
28 BPFLUB 0-255 UHF B-VFO receive tracking gain, low end of band 35
29 BPFMUB 0-255 UHF B-VFO receive tracking gain, mid band 145
30 BPFHUB 0-255 UHF B-VFO receive tracking gain, top end of band 253
31 AGCUA 0-255 UHF A-VFO AGC (suspect receiver gain related) 180
32 AGCUB 0-255 UHF B-VFO AGC (suspect receiver gain related) 170
33 SQTHUA 0-255 UHF A-VFO squelch tight threshold 90
34 SQTHUB 0-255 UHF B-VFO squelch tight threshold 100
35 RSSIUA nil, only displays current value UHF RSSI A-VFO, inject RF at desired level for 1 bar reading, rotate dial to sample and lock in value 72
36 RSSIUB nil, only displays current value UHF RSSI B-VFO, inject RF at desired level for 1 bar reading, rotate dial to sample and lock in value 75
37 A OBH 0-65535 unknown A+D adjustment 3000 *
38 A OBL 0-65535 unknown A+D adjustment 2700 *
39 D OBH 0-65535 unknown D+A adjustment 3000 *
40 D OBL 0-65535 unknown D+A adjustment 2700 *
41 D FSKLU nil Push PTT to send test FSK signal (heard as 2400 Hz on FM receiver) at low end of UHF band
42 D FSKMU nil Push PTT to send test FSK signal (heard as 2400 Hz on FM receiver) at mid UHF band
43 D FSKHU nil Push PTT to send test FSK signal (heard as 2400 Hz on FM receiver) at high end of UHF band
44 D 600HzU nil Push PTT to send test 600Hz signal UHF band (heard on FM as 200 & 400 Hz?)
45 D 300HzU nil Push PTT to send test 300Hz signal UHF band (heard on FM as 800 Hz?)
46 D 1031U nil Push PTT to send 1031 test sequence UHF band, heard on DMR as 1031 Hz
47 D BERU nil Display received BER of received UHF DMR signal
48 D DIGI nil Test UHF DMR for both TX & RX as if it were on a regular DMR channel
49 TXDAV 0-255 Unknown VHF analogue adjustment 145
50 PAHV 0-255 VHF RF power output turbo setting 177
51 PAMV 0-255 VHF RF power output high setting 124
52 PALV 0-255 VHF RF power output medium setting 88
53 PASV 0-255 VHF RF power output low setting 40
54 MODV 0-255 Overall deviation setting for VHF 50
55 MODV2 0-255 Overall deviation setting for 222 MHz 105
56 BPFLVA 0-255 VHF A-VFO receive tracking gain, low end of band 3
57 BPFMVA 0-255 VHF A-VFO receive tracking gain, mid band 135
58 BPFHVA 0-255 VHF A-VFO receive tracking gain, top end of band 253
59 BPFLVB 0-255 VHF B-VFO receive tracking gain, low end of band 0
60 BPFMVB 0-255 VHF B-VFO receive tracking gain, mid band 135
61 BPFHVB 0-255 VHF B-VFO receive tracking gain, top end of band 253
62 AGCVA 0-255 VHF A-VFO AGC (suspect receiver gain related) 170
63 AGCVB 0-255 UHF B-VFO AGC (suspect receiver gain related) 170
64 SQTHVA 0-255 VHF A-VFO squelch tight threshold 70
65 SQTHVB 0-255 VHF B-VFO squelch tight threshold 80
66 RSSIVA nil VHF RSSI A-VFO, inject RF at desired level for 1 bar reading, rotate dial to sample and lock in value 61
67 RSSIVB nil VHF RSSI B-VFO, inject RF at desired level for 1 bar reading, rotate dial to sample and lock in value 68
68 D FSKLV nil Push PTT to send test FSK signal (heard as 2400 Hz on FM receiver) at low end of VHF band
53 D FSKMV nil Push PTT to send test FSK signal (heard as 2400 Hz on FM receiver) at mid VHF band
70 D FSKHV nil Push PTT to send test FSK signal (heard as 2400 Hz on FM receiver) at high end of VHF band
71 D 600HzV nil Push PTT to send test 600Hz signal VHF band (heard on FM as 200 & 400 Hz?)
72 D 300HzV nil Push PTT to send test 300Hz signal VHF band (heard on FM as 800 Hz?)
73 D 1031V nil Push PTT to send 1031 test sequence on VHF band, heard on DMR as 1031 Hz
74 D BERV nil Display received BER of received VHF DMR signal
75 VBAT undetermined Calibrate displayed voltage. Do not adjust, otherwise radio will warn of incorrect voltage and prevent any further adjustments 109 *
76 F1 A0 0-65535 Hex BCD combination of mic gain and mic AGC values, however adjusting has no effect 42512
77 MODE 0-18 Changes operational frequency bands of radio
78 087.50M nil Receiver test of FM broadcast band
79 097.50M nil Receiver test of FM broadcast band
80 108.00M nil Receiver test of FM broadcast band

The typical values listed above are unique to one radio, and should not be used to create a complete alignment profile. It is highly unlikely that your radio will work properly using values from another radio, including these typical values. You need proper test & alignment equipment to be able to accurately set each value. As such, the typical values given here are only to provide context for any adjustments you may wish to make. Critical values are marked with an asterisk.

For the squelch threshold values, a higher value gives a more sensitive squelch, but no improvement to sensitivity is obtained with values higher than about 112 to 114. Lower values require progressively stronger signals to open the squelch.
The RSSI (received signal strength indicator - in other words the signal meter) has a fairly compressed range of 15dB. I’d have preferred to see at least 30dB range in the signal meter, but I’ve found an acceptable compromise has been to set one bar at -113dBm which equates to values of RSSIU of 36 and RSSIV of 39. The signal meter then reads:
  • 1 bar -113 dBm or about S-5
  • 2 bars -108 dBm or about S-6
  • 3 bars -103 dBm or about S-7
  • 4 bars -98 dBm or about S-9
Once finished changing your values, turn the radio off and on again to save them to memory. If you like, you can disable full test mode again by de-selecting the Full Test Mode check box in AnyTone Options application and writing back to the radio. Or, you can de-select both Full Test Mode and Band Select check boxes, which will totally inhibit test mode completely. The values you changed or adjusted will not be erased by doing this, it simply prevents you from accessing the full test mode and inadvertently changing them again. These values will not be overwritten, changed or restored to default by resetting of the radio. Once you change them, you can not get the original value back unless you wrote it down before making adjustments.

You can download a more comprehensive memory map of how each individual adjustment setting is stored in memory, and see more hidden values that are obviously used for RF alignment purposes, but are not available in this test mode. To experiment and adjust those you will need to use Flash Utility to create your own custom binary image, and write your own custom CDI and SPI files to enable that data to be written to the radio (Flash Utility can’t write to that area of memory directly, it is safest to write using the Icon update mode with a CDD, CDI & SPI file set).
Download the more comprehensive memory map here: http://members.optuszoo.com.au/jason.reilly1/Anytone-578-Flash-memory-map.zip (11kb)


Programming password lock Easy
Apart from the power on password, there is also a hidden programming password that will require a four character password to be entered in the CPS software before it will do any read or write operation. The password must be four characters, no more or less, and can be made up of any standard ASCII characters that can be typed on a keyboard. To do this, use Colin’s AnyTone Options application (download link in the Enabling Full Test / self adjustment mode section above) to enter a Program Password. To disable any program password that may be present, just use the backspace button to delete the password and leave this field blank; then write back to the radio.



FCC Part 90 approval information:
The FCC has documented quite a bit of interesting technical information regarding the 578 regarding their Part 90 approvals. You can find internal photographs, test reports, SAR radiation exposure limit testing reports and more. Visit the FCC report pages at:
https://fccid.io/T4K-D578UV



A look inside the 578

The back side of the display board. The GPS module ATGM336H is capable of tracking GPS & BDS (BeiDou) positioning systems. Also visible is the BlueTooth module.

Note the little cut out area and two mini coax connectors on the left bottom of the picture. One of the mini connectors is for the coax tail that goes to the GPS external antenna SMA connector on the back of the radio. The other connector is unused. Obviously this is a provision to have a tiny built in GPS antenna to the display unit itself, but AnyTone have decided against doing this in the end. A tiny 15x15x6mm active GPS antenna with a short coax tail terminating in a U.FL / IPX connector looks to be ideal if you want to try adding your own, see
adding your own internal GPS antenna

The back side of the display board. BlueTooth removed.



The front side of the display board.



578 MCU hides under the LCD display:



The 578 main board top side:



The 578 main board under side:



Close up of the twin 38 MHz IF crystal filters. Note the unpopulated PCB lands for a future version of the 578 that will have air band RX.

Notice how there is an unused position for a second crystal filter to be cascaded with the first... if you wanted even better selectivity, you could source a second pair of 38.550 and 38.850 MHz IF crystal filters, and install them after removing the little SMD 0 ohm resistor. But the 578 already has very good selectivity as it is already, so this is not really necessary.




Modifying the internal speaker for extra volume Advanced (extensive disassembly)
The internal speaker of the 578 can be made to be slightly louder. Testing shows a 2dB improvement in output volume, which isn’t a lot, but might make the difference if you’re in a noisy environment.
The theory behind this modification is that with a solid backing plate behind the internal speaker cone, this increases the back-pressure on the cone as it vibrates back and forth producing sound. If holes were to be drilled in this backing plate, air will be able to be more freely move out of the way of the speaker cone, restricting it less and allowing it to move more freely, generating a higher output volume.
Begin by disassembling the radio - quite a lot of disassembly is necessary to get to the back of the speaker, including unsoldering the antenna connection. Once you have free access to the speaker backing plate, remove it, mark out a series of holes evenly around the perimeter and mark them with a nail punch. To make the job of drilling out 5mm holes easier, screw the plate to a piece of scrap timber. Once the holes have been drilled, de-burr them and reinstall the backing plate. Ensure the foam pad that was originally between the back of the speaker and the backing plate is put back into place, and screw the backing plate down firmly, and finally reassemble the radio.







Replacing the SO-239 socket with an N-type socket Moderate
I get why a SO-239 socket has been fitted to the 578. Many hams use them, mainly because that is what a lot of other radios use too. There is a lot to be said for maintaining the status quo. But the SO-239 is a 90 year old design, they don’t maintain a constant 50 ohm impedance, and are usually only good to use up to 100 MHz. It’s about time that we ditch the SO-239 / PL-259 combination and upgrade to something a bit better. The N-type connector is a much better choice: good to at least 1 GHz and high quality types are usable up to 18 GHz, they also maintain a constant 50 ohm impedance across the connection, and not that it matters in this application, they also have a degree of weatherproofing over and above the SO-239 / PL-259 series.

Key benefits:
  • Higher quality, better design connector, less ’junk’ connectors around in the N-type
  • Slightly lower loss, especially at UHF
  • Better VSWR / return loss; SO-239 connectors have an impedance ’bump’
  • Better weatherproofing than SO-239 / PL-259 types
Suitable diamond flange, two hole, N-type sockets can be purchased from: Mouser part number 523-172323 / RFparts part number 0-RFN1020-1 / many other suppliers if you look
To replace the SO-239 socket with an N-type on the 578, first desolder the centre and earth pins of the socket as shown below. Then undo the screws holding in the socket, and it should fall right out. Also remove the brass square U shape ground bracket, but replace the screws that held it in. Test fit your replacement N-type socket to make sure it fits nicely. If all is good, solder a short bit of 1mm thick solid copper wire to the N-type socket centre pin, and bend it slightly upwards. Fit the new socket in the radio chassis and refit the screws that hold the socket flange. Make sure the screws are done up quite snugly, but not so over-tight that you strip the threads. Lastly solder the centre pin on to the PCB, clean up any flux that might be left behind and the job is done.







Adding an internal GPS antenna to the 578 Moderate
If you have a GPS equipped 578, you will have received an external GPS ’mouse’ style antenna that connects to the rear panel SMA socket. This is all very good, but what happens if you don’t want to use an external GPS antenna? The 578 was originally designed to have an internal GPS antenna too, but in the end the factory decided to rely solely on an external GPS antenna. It isn’t hard to understand why, either. With many 578s destined to be installed in vehicles, an external GPS antenna offers the very best performance in picking up the incredibly weak signals from orbiting GPS satellites as you drive under trees, into deep valleys or just in and around the city with lots of obstructing buildings.
However, if you are happy to sacrifice the performance of an external GPS antenna, you could add in your own GPS antenna to the display unit of the 578 and make use of that instead. There is space within the display unit, just behind the "GPS" inscription above the front panel LED in fact, where you could install your own mini GPS antenna. This space measures 19mm wide by 7mm high, and has an available depth of 20mm maximum. You will need an ’active’ (built in amplifier) type of antenna that is this size or smaller, and works for 1575.42 MHz - this is suitable for GPS and BeiDou GNSS, which the ATGM336H receiver works with. The 15x15mm types, which came with a short tail of mini coax and ending in a u.FL / IPX connector, cost a fraction over USD $3 each from eBay. Search for ’GPS active IPX antenna’ and look for the 15x15mm model (or 18x18mm types but those are a bit more expensive). It may be worthwhile buying a pack of four of these antennae for USD $8, and then you can cherry pick the most sensitive antenna. I found one of the four antennae I purchased was consistently taking about twice as long as the other three to get a position fix. Installation is simplicity itself:

Begin by removing the four Torx T8 size screws of the underside cover of the 578, and remove the two top side Torx T8 screws on the back lip of the display unit and carefully separate the display unit from the main body of the radio. Don’t pull it out too far or you will damage the connecting ribbon cable. Then:
  1. Unclip the existing u.FL connector that goes to the rear mounted SMA socket
  2. Insulate the original u.FL connector and tuck it away somewhere; a little bit of 2mm or 3mm heatshrink is a professional way to do this, but some electrical tape is OK too
  3. Find some double sided tape (maximum of 1mm thick). The double sided foam tape pictured here is used in the automotive industry to affix exterior trim to vehicle bodies etc. and works well
  4. Add a small square of double sided tape to the top of the GPS antenna
  5. Clip in the new antenna connector - due to it’s tiny size, this can be a bit tricky to get mated correctly, be patient and don’t force it. Mount the new antenna in the cut out as shown below
Reassemble the 578 and test to make sure everything is working OK. Remember you need to turn on GPS in the menu first!

So how well does it work? The below photograph illustrates just how well the new internal GPS antenna works. With a vehicle parked deep inside a large metal shed, completely obstructing a view to the sky, the 578 and 868 were set side by side on the dashboard. After 5 minutes, only the 578 with the added GPS antenna has a position fix. The larger size (roughly double) of the GPS antenna added in the 578 versus the smaller GPS antenna as fitted to the 868 accounts for this better sensitivity. All the same, don’t expect miracles from this antenna, if you mount the 578 low in a vehicle dashboard or console, your GPS fixes will only be intermittent. In situations where the GPS signal is weak, the external ’mouse’ antenna, mounted on the exterior of your vehicle will always be best.


In some 578s, you may find there are two u.FL / IPX GPS antenna connectors. If this applies to you, test your GPS antenna in both sockets; I found that connecting the new internal GPS antenna to the socket closest the volume control resulted in a consistently faster lock. You can also still keep the existing fly lead for the external SMA GPS socket connected to the other u.FL / IPX socket, and even have both GPS antennae connected and working at the same time, it doesn’t seem to upset the performance getting a position fix.





Improved cooling for the 578 Moderate
The 578 isn’t meant for high duty cycle transmit, such as that which many ham operators tend to do. Generating 60 watts of output in such a compact body means the radio will heat up quickly, there is no getting around that. This alone is a very good reason to operate using the lowest power possible for your requirements. However, if you simply must use high power for anything other than a very brief call, then there are things that you can do to improve the cooling of the 578 in these circumstances.
The first change to make is to reverse the direction of the airflow over the heatsink fins of the radio body, which is done simply by turning the fan around. Undo the four screws holding the fan to the back of the 578 chassis, and turn it around so it faces the other way. The fan will now blow air over the heatsink, rather than drawing or sucking air past the heatsink fins. This seems to be more efficient at cooling the radio. If you are handy with a bit of sheet metal or a 3D printer, you can also make a small cowl to place over the back of the heatsink fins, which will help direct airflow over them, further improving cooling efficiency. The difference isn’t huge, but worthwhile.

A good example of a small cowl added can be found here:
http://f1dmg.free.fr/578a
However, if you are often going to be using high power, it would be a much better idea to fashion a bracket to hold a 120mm computer fan to the top of the heatsink. Noctua make some excellent quality, very acoustically quiet fans that would be excellent for this job.



General technical information
The 578 uses a hybrid receiver, with a conventional super-heterodyne 1st IF stage using 38.550 and 38.850 MHz Intermediate Frequencies, each followed by a direct conversion IF receiver. There is a relay and substantial diode for reverse polarity protection, and a third IF strip that is unpopulated; in future models of the 578 this will be the AM air band receiver.
The following devices are found within:
  • GD32F303VKT6 ARM Cortex-M4 32 bit MCU with 3072kbyte internal flash and 96kbyte internal SRAM
  • Toshiba TC58CVG1S3HRAIG 2Gbit / 256Mbyte NAND flash memory
  • Sicomm CT3258TD baseband processor for DMR with built in AMBE2+ vocoder & 12.2 MHz oscillator
  • Texas Instruments TLV320AIC3204 DSP / codec
  • 4 x Undetermined transceiver ICs & 26.0 MHz reference oscillators. These devices have the same pinout as an AT1864S, but are more capable than the standard AT1846S. One pair is being used as the 1st Local Oscillator for VFO-A and VFO-B, and the other pair are acting as a direct conversion 1st IF baseband receiver.
  • RDA 5802N FM broadcast band receiver
  • YD1517P (LM1517P equivalent) 2x 6 watt audio power amp, working in push-pull mode to give 12 watt output
  • Two NXP AFT05MP075N LDMOS 70 watt RF power amps, 18dB narrowband gain, one each for independent VHF & UHF power amp stages
  • VHF and UHF receive front ends each have eight stages of varactor track tuned filtering!
  • ATGM336H GPS & BDS (BeiDou) positioning module (GPS models only)
  • Battery backup for real time clock, plus a second backup battery for ???



Flash memory structure in the 578
The 578 is fitted with a 2 Gbit / 256 Mbyte external flash memory, and the MCU has 3 Mbyte of internal flash memory that holds the operating firmware.
Here’s what is known about the structure of memory in these radios so far:

578 Toshiba TC58CVG1S3HRAIG 2Gbit / 256 Mbyte NAND external flash memory map
Address in flash Contents
0x00000000 to 0x0014FFFF holds alternate language fonts e.g. Chinese, Japanese, Greek, Cyrillic, Roman numerals. There is some English font there but it doesn’t appear to be used at all
0x00150000 to 0x00159FFF default AnyTone start-up picture
0x0015A000 to 0x001FFFFF multi colour icons bitmaps
0x003E0000 to 0x0041FFFF unknown data
0x00420000 to 0x00434FFF more multi colour icons bitmaps
0x00435000 to 0x0043BFFF monochrome fonts, possibly not used
0x00800000 to 0x02A9FFFF codeplug data (not including DMR IDs)
0x02AC0000 to 0x02AC9FFF custom start up image bitmap
0x02B00000 to 0x02B09FFF background display image bitmap BK1
0x02B80000 to 0x02B89FFF background display image bitmap BK2
0x02F00000 to 0x02F80679 active RF ’soft’ alignment data and backup copies
0x02FA0000 to 0x02FDFFFF active ’local information’ radio configuration data and backup copy
0x02FE0000 to 0x03000000 unknown data
0x05500000 to (likely) 0x07FFFFFF DMR IDs
0x0C8E0000 to (likely) 0x0FFFFFFF DMR audio recordings


Flash Utility software: Courtesy of Colin G4EML comes this small utility program that can read and write the external 2Gbit flash memory where the codeplug, DMR ID database, RF alignment data etc. lives. There are some rules to the safe use of this software:
  • Reading the flash is perfectly safe, it is the writing of data that you need to be careful with.
  • Through careless use when writing data, this software can most definitely ’brick’ or disable your radio, or cause hardware damage by writing RF output power values to destructively high levels for example. You accept all risk in use of the software.
  • The radio will attempt to prevent overwriting of critical data in certain areas of the flash memory, typically stored between addresses 02F00000 and 02FDFFFF. It is generally better to create a set of CDD, CDI and SPI files to write to this area of memory, and write using icon update mode to ensure the radio MCU is safely halted.
  • If using Flash Utility to write to the flash memory you need to apply a (hex) 20000 byte offset. For example, if you want to write to address 00000000 you should instruct Flash Utility to begin writing at 00020000. It is unknown why this is necessary, and exactly at what memory address this offset is no longer needed, but it applies at least as high as address (hex) 04000000.
  • You should write to the radio in multiples of 256kbytes, even if you only want to change just one byte. (Do not forget the 128k offset that needs to be applied) This restriction doesn’t exist when only reading the flash.

I *** STRONGLY *** recommend you make a backup of your flash memory contents by reading at least the critical memory area between addresses 02F00000 and 02FDFFFF and saving to a file, and keep that file in a safe location. You can read the entire flash contents from 00000000 to 07FFFFFF if you wish, but this will take several hours to read a 1Gbit flash memory via a serial interface.

Download the Flash Utility here:
http://members.optuszoo.com.au/jason.reilly1/AT_Flash_Utility_v3.zip (10kb)
Flash Utility is compatible with the 578, 868, 878, 6X2 & DJ-MD5. When reading from the radio, it might be a bit confusing to users to have to specify a file before reading begins - this is the file you will be saving your read results to.



Backing up or restoring vital alignment & configuration data of your 578
There is vital RF alignment and configuration data, unique to your radio alone, that is stored in memory. It would be a very good idea to make a backup of this data in case you ever need to restore it at some time in the future. This could be due to flash memory corruption, or any number of other reasons.

Making a backup
  1. Download Flash Utility here:http://members.optuszoo.com.au/jason.reilly1/AT_Flash_Utility_v3.zip (10kb)
  2. Plug in your programming cable to the radio and your computers USB port, and power on the radio
  3. Start AT_Flash_Utility_v3.exe
  4. In the Start Address (Hex) box type 2F00000 [ 2F and five zeros ] and in the Length (Hex) box type E0000 [ E and four zeros ]. Take care to correctly enter the hex addresses given in this step.
  5. Click the Select File button, and navigate to the directory you wish to save the data backup file into. Enter a file name of "myvital.bin" then select Save. If you have more than one radio, or perhaps you own another model of radio (eg: 878 etc), make sure you save each backup to a different directory and clearly identify which individual radio that directory and it’s backup file belongs to.
  6. Select your usual Com Port, and then click the Read button. AT Flash Utility will then read the vital bits of flash memory and save it to a file called myvital.bin and takes about a minute to complete.
  7. After the read is complete, click on the OK button. Confirm that your myvital.bin file was saved to your directory and that its size is 896kb. If not, go back to step 4 again, making absolutely sure you have given the correct Hex address and length values.
  8. Close down AT Flash Utility.
  9. Rename the file myvital.bin to myvital.CDD (i.e. change the file extension from .bin to .CDD) This step is very important, do not skip this step!

Restoring a saved backup file
This step shouldn’t be carried out unless you have strong reason to believe your RF alignment data is corrupt. There is inherent risk, though very slight, that writing data to parts of flash memory that isn’t normally user accessible can make things worse. Follow these steps carefully, and take your time.
  1. It is assumed you already have downloaded Flash Utility as per Making a backup step 1 just above.
  2. Download some supporting files necessary to restoring a backup here:http://members.optuszoo.com.au/jason.reilly1/myvital-support.zip (<1kb)
  3. Unzip these support files to your directory holding the backup file. You should now have the following files in there: myvital.CDD (your previously saved & renamed myvital.bin), myvital.CDI & myvital.spi
  4. Plug in your programming cable to the radio and your computers USB port, and power on the radio while holding down the P1 button & dial knob. Confirm the display shows "UPDATE MODE" with a flashing green LED
  5. In the CPS programming software, go to menu Tool > Firmware Upgrade (or manually execute QX_Firmware_Update.exe)
  6. Click on the Open Update File button, navigate to the directory where you saved your backup, select the myvital.spi file and click Open. Click on OK below the File Open Succesed! message. (If you have multiple radios and multiple backup files, make absolutely sure you have selected the correct backup file to send to the connected radio)
  7. Ensure Duplex box is ticked, and that Com Speed is set to 921600. Click on Write. This step will restore vital RF tuning data that is unique to your radio back in flash memory, and takes 25 seconds to complete.
  8. Turn the radio off, then power on the radio normally this time, without holding any buttons.
  9. You may need to set the time & date. The radio might also power up in Chinese language mode, this is OK, after writing your codeplug to the radio that will be corrected. You may need to power up the radio in test mode to change the band (MODE) to match what you were using before, if you get Band Error when sending your codeplug back to the radio.
  10. You are now done!



Fix a frozen during boot up 578 Easy
Some people have found that their radios have frozen on boot, that the radio displays the startup message "Booting... Please Wait!" or displays the startup picture and does nothing else. Try the following steps, in this order, to clear the problem:
  • Turn the radio off, leave it off for ten seconds, and turn back on
  • Turn the radio off, remove all power to the radio for 5 minutes, then reconnect and power on
  • Attempt a reset: turn the radio off, and then hold P2 and the dial knob in while turning the radio on
  • Reflash firmware: turn the radio off, then hold the MENU and EXIT buttons down together just after power off, the LED will flash red and you can then use the CPS software to load your firmware file using Tool > Firmware Upgrade
If these steps have not worked, there is a procedure that may help un-freeze your radio and get you going again. Note that this defroster will only work if the freezing is caused by memory corruption. If the problem is a hardware failure, then this will not work.

578 Quick defroster
Credit to Francesco IK8JHL & Andres CD2KDT
This process is quick and simple, forcing the radio to undergo a reset. You will loose your codeplug, so make sure you have a saved copy first.
Download the 578 fast defrosting pack from
http://members.optuszoo.com.au/jason.reilly1/578-Fast-defrost.zip (1kb)
  1. Unzip the contents of the 578 fast defroster
  2. Confirm that your frozen radio can power up in the Icon Update mode: turn the radio off, hold the P1 and dial knob down while powering on the radio. You should see a screen with "UPDATE MODE" displayed. If you do not see this screen, this process will not work for you and the radio will have to go back to the supplier for repair or replacement.
  3. Start up the CPS, preferably using the latest version you can get. Go to menu Set > Set Com. Select the Com Port you normally use to program your radio.
  4. In the CPS, go to menu Tool > Firmware Upgrade. Click on the Open Update File button, navigate to the directory where you have unzipped the files and select the 578-Fast-defrost.spi file and click Open. Click on OK below the File Open Succesed! message.
  5. Ensure Duplex box is ticked, and that Com Speed is set to 921600. Click on Write. The data only takes a fraction of a second to be written to the radio.
  6. Turn off the radio, wait ten seconds, then turn it back on again. The radio should immediately go through a reset.
  7. You may need to set the time & date. The radio also might power up in Chinese language mode, this is OK, after writing your codeplug to the radio that will be corrected. You may need to power up the radio in test mode to change the band (MODE) to match what you were using before, if you get Band Error when sending your codeplug back to the radio.
  8. You are now done!



Writing your own .CDD files Advanced
Reading data out of the radio flash memory is easy using Colin’s AT Flash Manager software, but if you want to write data, especially to ’critical’ areas of flash memory such as anywhere between 0x02F00000 and 0x02FDFFFF, you will need to use a special technique to do this. This involves creating a CDD file and supporting SPI and CDI files, and sending this to the radio in the ’icon update’ mode (holding PTT & PF2 buttons on power up). This ensures the radio CPU is halted from normal execution while data is being written, and places the radio in a safe mode to permit data to be written. The CDD file is simply a binary image of the data you wish to write - nothing out of the ordinary there. There are three rules you need to follow:
  • You must ensure your CDD file is 256kbyte or some multiple of that size
  • You must ensure that your data to be written starts at a 256kbyte page eg: hex addresses 00040000, 00080000, 000C0000, 00100000, 00140000 etc.
  • And then lastly, you will write this data with an offset of (hex) 20000 bytes above the intended actual location you wish to write to.
Example: you wish to write 256kbytes of data to 0x02F40000. First determine if this is the start of a 256k page. 0x02F40000 is evenly divisible by 040000 (256k) so that is good. Then specify for data to be written with a 128k (hex 20000) offset, so writing should begin at address 0x02F60000, and the data you write will actually go to 0x02F40000.

It is the SPI and CDI support files that tell the radio where to write this data, and how that should be done that is the slightly tricky bit.

SPI format:
20 00 00 00
(number of sections to load in hex)
00
(4 bytes of CDD file length in bytes, little endian)
00 00 00 00


CDI format:
(name of original .bin file followed by 00 then padded out to 256 bytes with 20)
(4 bytes of the starting write address to the radio, little endian - note you need to apply a 0x020000 offset as detailed just above)
(4 bytes of number of bytes to write, little endian)
(4 bytes of the starting point address in the CDD file to begin writing from, little endian)
00 00 01 00
00 00 00 00 00 00
[next record of another section to write, if applicable]
[and so on...]



Updating the SCT3258 baseband / DMR codec firmware
The ’baseband’ SCT3258 DMR codec IC can have it’s own firmware updated with .hex files. Later releases aimed to improve DMR decoding performance with weak signals, improve stability etc. Provided here is an installer that will send the hex firmware files to the SCT3258 (uninstall any earlier versions you may have, this is v1.4.0.1, earlier versions will no longer work), instructions, and four different version hex files which are the firmware images for the SCT3258. Versions included are: V2.01.05NJ, V2.01.06PN, V2.01.07B5 and the latest V2.01.07BA which should already be in all 578 units shipped by the factory. These are suitable for the 868, 878, 578, 6X2 and DJ-MD5 too. To enter the SCT update mode, hold MENU and dial buttons down while powering on the 578, until you get "WARNING This is Boot Mode for Sct!!!" displayed - it can take several seconds of holding the buttons down for this display to appear.
You can check what version your radio is by using menus: Menu > Settings > Device Info > scroll all the way down to see Sct 3258 Ver.
Download from here:
http://s000.tinyupload.com/index.php?file_id=76636446613342152584 (2.85 Mb)


Future developments & ideas
  • Exploiting the capabilities of the TLV320AIC3204 audio codec chip. This is a very powerful chip with the possible scope to facilitate DSP noise reduction, equalisation, tone control and digital AGC audio.
  • Explore some new fonts, perhaps some screen colour changes and icon customisation
  • Investigate if the display unit could be remote mounted by use of a longer 40 pin ribbon cable and a custom 3D printed backing plate for physically mounting the head
  • Patching the vocoder in the SCT3258 for something else entirely. There is a very strong resemblance between AnyTone’s SCT3258TD_UpdateFlash_v2_01_05NJ.hex and Hytera’s PD36x series SCT3928_UpdateFlash_V2_01_05PD.hex - both in name and hex content. The Hytera can already load different hex files for AMBE, SELP, NVOC & COMM vocoders, but this is slightly dependant on the different hardware installed in the Hytera radios. It would be very interesting to experiment with an open source ham vocoder like FreeDV’s Codec2, and see if this could be used to replace the AMBE2+ vocoder in the SCT3258. Sadly the SiComm hex code that gets sent to the SCT3258 is encrypted, so for the moment any patching is unlikely


© Copyright Jason Reilly, 2018-2020

Except as permitted by the copyright law applicable to you, you may not reproduce or communicate any of the content on this website, including files downloadable from this website, without the permission of the copyright owner.