Below are the steps necessary to update the Firmware in a GD-77S. The link is specific to the version available when these instructions were created and may need to be updated to reflect the latest version.

These steps will fill in some of the possible gaps in earlier documentation and make the First firmware Update a little less intimidating, or help refresh your memory if it has been a while since you have last updated your firmware.

GD-77S Firmware Update Instructions

1. If you haven't already, download this archive: https://gd-77.s3.amazonaws.com/GD-77S%20Firmware%20V1.3.0%20%26%20Software%20V1.1.10_20190712.zip

2. Extract the files from the archive

3. Open the Firmware Software Vx.x.x folder (x.x.x refers to the actual firmware version)

4. Open the Update Operation Word file in this folder

5. Review or print the Update instructions. Use these to fill in any gaps that are causing difficulty.

6. Turn Off your GD-77S and insert the Program Cable into the radio and USB Port.
A. On the side of your GD-77S are 2 extra buttons below the PTT button. These are referred to as Side Keys in the instructions.
B. Press and hold the Black Side Key 1 and the Blue Side Key 2.
C. Turn on the radio while still holding the Keys.
D. When the indicator is Green in color, this indicates that the radio has entered the Update mode.
E. Release the Side Keys,

7. Open the Update Software folder in the same folder as the Update Operation Word file.
A. Observe the folder starting with Eng. This contains the update Application, It is named Update.exe.
B. Open the folder starting with 'ENG followed by the version.
C. Right Click on the Update application . (Update.exe)
D. Choose Run as Administrator.
E. If you encounter a Windows pop-up asking permission to open the application, choose Yes.

8. Click on the Browse Button and select the Update file.
A. It will be in the Firmware Software folder referenced in step 3.
B. The Firmware file will be labeled GD-77S_Vx.x.x (x.x.x refers to the actual firmware version)
C. Choose the Firmware file by clicking on it.
D. Click on the Open button below and to the right.
E. The actual Firmware Update file is loaded into the Update application.
F. Click on the Download button (on right; second from the top)
G, The small Blue boxes in the center will show the progress
H. When the update file has been loaded a Status pop-up named Update with the message 'Update success' will open .
9. Click OK.

10. Turn the Radio Off
A. Close the Update application (Note: leave application open is you will be updating more than one radio and repeat steps 8 and 9 above for each.) When last radio is updated, proceed to step 11. .

11. Remove Program Cable from Computer and Radio
A. The firmware has now been updated

If the radio is not allowing you to select bandwidth or set a tone from the menu, it will need to have the firmware updated to remove all preset tones and make that Menu selection active, as well as the Bandwidth options.

To update the firmware, use the following link:
https://radioddity.s3.amazonaws.com/Radioddity_GM-30_Firmware%2020210403%20%26%20Software_V2.06_20210430.zip

Download and Extract the files from the archive and open the GM-30 Programming Software folder



Open the Radioddity GM-30 v1.05 en installation app.



Install the Programming Software and Open App



Plug the programming cable into the computer
Open Device Manager to determine com port number



Select Communication Port from the Program Tab



Select the appropriate port



Select Program, then Tool





Select and Load the Upgrade file from the GM-30_Firmware Update folder

Plug the programming cable into the radio
Press and hold the PTT + LED key, then turn the radio on
Click Update - Wait for 100%



Turn the radio off, remove the programming cable
Turn the radio back on and select Menu Option 40 and follow through to Reset the radio.

The Bandwidth settings should now be corrected and existing DTDSS/SCS tones removed.
The CTCSS/DCS Tones can now be set from the programming software and written to the radio, or by using Menu Options 9 through 12

While the online Manual has the correct information, the manual that came with your radio may contain an error in the Menu Item description for Option 25 - Memory.

Menu Option 25 - Memory 000 - 127

The manual gives this description: This menu is used to delete the programmed information from the specified channel (0 through 127) so that it can be either programmed again or be left empty.

The correct description:
When saving a channel, this menu is used to save the programmed information for the specified channel (000 - 127). If a number is preceded by "CH-" the channel already has channel parameters stored.

We hope this clears up some confusion. Enjoy your GA-510, and don't hesitate to contact us if you need assistance.

Question:
How to active the VOX function on the GA-2S/BF-888S/BF-88A/BF-88E?

Answer:
To enable the VOX function, here are two ways:

1. Select the current channel to one of the 1-5 channels, press and hold the PTT and Moni button to turn on the radio, then you will hear the voice prompt that the VOX is on. In this way, all the 16 channels have been activated the VOX function and the user can talk directly to transmit without pressing the PTT button. With the acoustic tube earpiece, the users can hear and talk more clearly.

2. You can activate the VOX function in the programming software. Select the VOX function and all the 16 channels can use the VOX function directly. Normally turn on the radio and you can use the VOX function no matter which channel you are at.

To turn off the VOX function, turn off the radio, set the current channel to one of the 1-5 channels, press and hold the PTT and Moni button to turn on the radio, then you will hear the voice prompt that the VOX is off. If the VOX is turned off, you will see the VOX function is not selected when you load the radio to the programming software.

Question：
I was wondering if the radioddity GA-2S long range two way radio can connect with a cp200 Motorola if same frequency and channel.

Answer:
Yes, they can communicate with each other under analog mode with correct programming.

Question:
How to scan multiple channels on a GA-2S radio? I can't seem to get the radio to scan like in the instruction manual. Pressing the monitor button only monitors that current channel (and usually gives me loud static sounds).

Answer:
There is no scan function on GA-2S.

Some GD-73 users reported that they can't get the driver installed well on Windows 10 or can't run the programming software on Windows 10. Below are two solutions to solve the problem:

Solution #1:
Install the driver as administrator

Solution #2:
If the driver still can't be installed correctly even if the user has run it as administrator, please suggest the user remove the original driver and then install the driver from the following link:
https://sourceforge.net/projects/libusb-win32/files/

Users can also find the download link for this driver by searching "libusb-win32-src-1.2.6.0.zip" on the internet. No need to install the original driver we provide if users have installed this driver.

PROBLEM:
Customer reports that he can't run the GD-73 programming software(CPS) on his computer. An error showed up and said that file libusb0.dll is missing.

Background--why the software of GD-73 is different from other radios:
The combination of charging and programming from the same connector has introduced the need for a new driver installation and installation order to be required. For the first time running the GD-73 CPS on a computer, the user needs to install the driver first and get the radio connected with the computer.

Solution:

1. Turn on the radio and plug in the programming cable (to both radio and computer).

2. Install the driver. Most important, run the driver installer application as Administrator to install the required driver.
For more information about installing the driver, please see the following instruction:
https://radioddity.s3.amazonaws.com/2019-06-05_Radioddity_GD-73_ Getting_On-Air_V1.0.pdf

3. Open Device Manager and look for a device named libusb-win32 devices. Open it and it should have a cable icon and walkie-talkie-C7000 beside it.

4. Now, with the radio connected to the computer and verified by the device in the Device Manager, you can run the CPS.

5. After the first time running the CPS, you can open it with or without connecting the radio on the same computer next time.

Questions:
The functions I would like to use on the GD-73E are the following:
-enter a code for the encryption
-enter a short message
-open the squelch to check if a frequency is free.

Answer:
*All these three functions can only be set on the CPS

-enter a code for the encryption:


-enter a short message:
To send short message on the radio, user needs to add quick text in the CPS first. And this can only be done on the CPS.


-open the squelch:
Set the squelch level in the General Settings.

When writing to the radio with the programming software, you may encounter blanks where some channels are not written, or an incomplete Write process. Here are some short rules to a Complete and Accurate Write process.

If CTCSS/DCS or CTCSS/DCX Are chosen from Channel information screen, and no tone is selected, it is shown as OFF

If CTCSS/DCS or CTCSS/DCX Are chosen from Channel Information Edit screen (Click the More option), and no tone is selected, it is shown as None

Tones must be chosen from the Channel Information screen to be able to write to radio.

Check the items below before starting the Write process:

--- If no tone is chosen, it needs to show OFF in the Channel Information screen.

--- If Decode/Encode tones show any combination of OFF and None on any channel, the Write process will not complete

--- If any tone shows None, it will not write to the radio, (the Write process will not complete).

--- It will not initiate the Write process if the screen is in Sleep Mode (not showing).
Error Code: (Abnormal reading and writing, check the connections are correct, or walkie-talkie power supply is turned on!)

We hope you enjoy your iRaddy GM series 3-IN-1 UHF Phone Case radio. Don't hesitate to contact us if further assistance is needed.

Problem:
How to set the CB-27 radio to the AM mode?

Answer:

Regular operation:
Long press [A/F] key to select AM mode and FM mode. However, such a change only possible if the set channel is also allowed in the respective operating mode. The respective operating mode is indicated on the LC display with "AM" or "FM" to the left of the channel number.

If the user is in UK and uses the UK norm frequencies, the UK norm only has FM mode. Press [A/F] key will only switch the radio to CE version. User need to switch the norm to EU first.

1. For changing the current norm, please hold [A/F] key while turning the radio on. The current
norm appears in the display.

2. Use the channel selectors [UP] and [DN] keys of the microphone to set a different norm
Confirm your selection by turning the radio off and on again.

*If the instruction above does not work, please ask the customer for the operation video to show the issue.

Question:
Will this require a ground plane? 28-715-009

Answer:
If you want to launch the signal out into the atmosphere to reach a further transmission range, we recommend that you get a ground plane.
If you have a fiberglass vehicle or boat, you don't require it. The coaxes shield is used for counterpoise (substitute for the ground connection).

Question：
I recently purchased the FS-T1. What are the 25 50 75 numbers displayed on the right of the frequency? These are not documented. On the unit, the 50 is always showing on channels 1-14 (Tx or Rx), no numbers showing on channels 15-22, and I never see the numbers 25 and 75 displayed except on boot-up.

Answer：
The numbers are the accuracy of the frequency. Take the FRS frequency 462.5625 as an exanple, the radio only displays 462.562, as for the 0.0005, there will be a small number 50 on the right of the frequency, which means the accurate frequency is 462.562 50.

The Battery Cover on your Voyager RV6 Marine VHF Radio is highly water-resistant and a tight fit. The Belt Clip, if installed, will put pressure on the battery cover, making it more difficult to manage. For the first few times, remove the belt clip until you get accustomed to the process. Remove the antenna and have the radio face down with the top facing you. Place the radio on a towel or something soft that won't scratch the lens. With a slight downward pressure to start, pull the Battery Cover latch toward the top of the radio; which should be facing you, then lift slightly to see if it has completely released. When the latch has cleared the case, hinge the cover-up toward you. There will be resistance on the lid lifting because of the seal to keep water out and off of the battery. It is going to be a tight fit, and should remain that way - so the technique of releasing the latch and lifting that first-quarter inch will be the part that will take practice.

You can develop your own style. but when pulling latch toward you, you can stabilize the top of the radio with the other hand. This may make a more stable way of holding, rather than using the other hand to hold the radio. This procedure is just so you can work with it a few times until you feel comfortable holding the radio in one hand and opening the cover with the other.

We hope this will make the process a bit easier.

Problem：
The RV6 radio suddenly froze up with all static when listening to the whether station. Tried reboot the radio and reinstall the battery, but the radio froze again and the keyboard has no control.

Solution:
To avoid static and the radio froze up, please reinstall the battery, press and hold [VOL/SQL/MONI], and then turn on the radio to enter set mode.
Press [VOL/SQL/MONI] again to select "AL", then press DOWN Button to switch to "OF", power OFF.
Then press the POWER button to power ON again, it will back to normal.

Question:
1. Can I use scan on any channel? I use the lower channels and its a bit annoying to have to change to channel 16 when i want to scan.
2. I also noticed when the R2 is on channel 16 and i turn the R2 on, scan starts automatically and i can't turn scan off.
3. How to eliminate squelch tail when receiving transmission from different brand radios?

Answer：
1. Can I use scan on any channel? I use the lower channels and its a bit annoying to have to change to channel 16 when i want to scan.
-- No, the scan can only be turned on when the radio is turned to channel #16.
2. I also noticed when the R2 is on channel 16 and i turn the R2 on, scan starts automatically and i can't turn scan off.
-- If there are more than two channels are added into the scan list, channel #16 will only function for turning on the scan. Switch to other channels than #16 can turn off the scan.
3. How to eliminate squelch tail when receiving transmission from different brand radios?
-- It is normal to have squelch tail when receivig from different brand radios. There's no way to eliminate it because different brand has different squelch tail elimination way.

As long as the IC-705 can provide a low trigger on PTT and you are able to build a keying cable, it should work. The pin out of the cable would have to come from the Icom. The radio will have a data jack on the rear panel, and it will have Ground and PTT available to connect to the keying cable that comes with the radio.

It is difficult to save an offset to memory when programming the QB25 without a computer.

The following steps will allow you to save a complete channel with offsets and any signal tones necessary.
Delete channel (if necessary) - Menu 45
Switch to VFO
Enter RX Frequency (enter zeros if needed to fill all blanks. Example 146.7000)
Enter RX Tone (if needed)
Save to empty channel - Menu 44

Enter TX Frequency (enter zeros if needed to fill all blanks. Example 146.1000)
Enter TX Tone (if needed)
Save to the same channel as RX frequency - Menu 44
(Hold the Right knob in until it returns to the operating screen)
Change to Memory, Select Channel, and check operation.

When trying to open the DB25 or QB25 CPS, you may encounter an error that a file that is necessary for the program to run is missing.

Navigate to the folder where the application is located and right-click on the app: DB25QB25_VIP_CPS

Select Run as Administrator - Windows should now find the file that is in the same directory as the App and allow you to use CPS.

If the problem persists, the missing file(s) will have to be registered.

This is more likely to occur on a new computer where the Microsoft communications support files have not all been registered.

==================================

This is How Users can Fix the MSCOMCTL.OCX is Missing Error

1. Check the Desktop’s or Laptop’s System Details
2. Register the MSCOMCTL.OCX File on 64-bit Systems
3. Register the MSCOMCTL.OCX File on 32-bit Systems
4. Reinstall the Software

Check the Desktop’s or Laptop’s System Details
1. First, users should check whether their laptops or desktops are 32 or 64-bit systems as the directory users need to register the MSCOMCTL.OCX file for is not the same for both. To do so, press the Windows key + S hotkey.
2. Enter the keyword ‘system information’ in the search box.
3. Click System Information to open the window in the shot directly below.

4. Then select System Summary, and check the System Type detail there. An x64 system type is a 64-bit system.

2. Register the MSCOMCTL.OCX File on 64-bit Systems
Users with 64-bit desktops or laptops will need to register an MSCOMCTL.OCX file for the SysWOW 64-bit folder. To do so, open File Explorer with the Windows key + E hotkey. Then open this folder path in File Explorer: C:WindowsSysWOW64.

Please CLICH HERE to download the solution file.

Question: I got some static from the earpiece, it does have a push to talk button and Mic and when you transmit the meter on the front of the radio shows it doesn't transmit as well. It's not very strong.

Answer: The mics that we are selling are currently not perfectly compatible with the GS-5B because it doesn't support DUAL PTT. Take the RS22 as an example, and the user could only transit via channel A or B.

Question: When attempting to upload/write from iPhone to the GS-5B via bluetootBluetoothBluetoothh, the radio turns off the bluetooth connection at 98.7% completion every time.

Answer: It does not go beyond 98.7% on a complete Bluetooth upload. I read the radio using the PC software after sending a Bluetooth upload ending at 98.7% and all channels were present. It only goes up to 77% on a complete read using the PC software. A Write process using the PC Software is complete at 77%. 77% of what, I do not know, but it reads and writes the entire contents (84 channels) showing Success at 77%. I do not think it is a hardware problem, but I am sorry for the inconvenience it caused.

We currently do not sell GMRS antennas on our website. But we will consider introducing some accessories for GMRS radio in the future. As for the suggested antenna, The DB20-G comes with a general SO289 connector. So you will need a PL-259 antenna, and the UHF antenna will work.

There is a passive GPS antenna automatic gain control chip inside the radio. So a passive one is recommended.

Several customers have asked for more advise and details on using the CPS supplied for our DB25-D dual mode dual band mobile radio. As we care on the demand of our customers, our engineers, together with our Customer Support staff, have put together a quite comprehensive Addendum to the existing manual you got with your DB25-D. It also does include the details for using the GPS-functionality of the DB25-D together with APRS, both in analog as well as in digital mode.

CLICK HERE to get your copy of this brand new addendum.
　

------ by SAVO LUZAR S52SX

1. Guide how to set up APRS to Radioddity DB25-D

1.1 BASICS

1.1.1 Update radio to the latest firmware and use proper software for programming your radio.

1.1.2 Always read code plug from radio, make a change to code plug and then write it back to the radio, because in this case your code plug will have all correct data that match to your radio.

1.1.3 Never write data to the radio from different version of CPS, while this will lead to unpropped function/working of your radio.

1.1.4 That guide will work only in WINDOWS environment on your PC or Laptop.

1.2 Settings in Radio Radioddity DB25-D

You need to prepare your radio for APRS.

Press Menu, go to Appendix, Choose GPS (red icon) and you will see this menu.

Enable GPS Switch.

Under GPS Serial Data tick all options.

Go to Calibrator and set to AUTO.

Now go back to appendix menu and choose APRS.

In APRS Menu you have 5 options: APRS Type, Analog APRS, DMR APRS, Timer and Beacon.

Select APRS Type, you will see 4 options, select DMR+Analog APRS.

Under Analog APRS choose PTT Upload and choose TX End.

All other settings we will made in CPS.

1.3 Connect your Radio to your PC/Laptop

Connect your radio with USB cable and set proper USB Port by clicking on Comm Menu.

Choose proper COMM port and click Read, you will get response from your radio.

Always Read from the radio, do not open saved code plug.

1.4 DMR Service Menu

Go to the DMR Service and set:

GPS to ON, GPS Interval 10s, GPS Channel OFF

1.5 APRS Menu

Under the MENU APRS you have following:

1.5.1 Black frame settings:

Manual TX, set 15.

APRS Auto TX Interval set to 30s.

Under Beacon – set Beacon. Here you have two options – GPS Location or Fixed Location.

If you choose Fixed Location your radio will transmit GPS Coordinate marked in green frame!

1.5.2 Green frame settings:

You can find own coordinates by web browser or visit www.aprsdirect.com.

Be Aware that those Coordinate are in Slovenia right now.

Those are in format Latitude 46°10' 11ˇ N and Longitude 14°20'18ˇ E

1.5.3 RED frame settings:

TX frequency: for Europe Africa and Russia is 144.80, for all other counties check picture bellow.

TX QT/DTQ – this is analogue or digital tone. Leave this to OFF. If in your country is in use tone, that ask your local igate owner what kind of tone is
used to open igate.

Transmit Delay and Preware Time: Optimal setting are 500ms and 300 ms, if you think this scan be decreased, go ahead and test it.

1.5.4 BLUE frame settings:

YOUR SSID: you have options from 0 to -15, it up to you what kind of extension you would like to have. Usually 0, -1.-2 are used for fixed location, -7 for weather station, all other extension can be normally used.

APRS Signal Path: WIDE1-1, is working fine, you can also use WIDE2-1 and WIDE2-2. Always use this without any space.

You Call Sign: put in your call sign.

APRS Symbol table: there are two option according to APRS map chart – primary symbols ˇ/ ˇ and alternate symbols ˇ \ ˇ

Map Symbols can be found at this link: https://www.yachttrack.org/info_camper/downloads/APRS_Symbol_Chart.pdf

APRS Map Icon: According to the map symbols you can use whatever icon you like.

Your Sending Text: Here you can write a text, that everyone can be seen, if click on your call sing in web page www.aprs.fi or www.aprsdirect.com

1.5.5 Yellow Frame Settings:

This setting are for digital APRS via DMR repeater’s.

Report Channel You can choose Current channel, or any other channel in your channel list. I recommend to use Current channel.

APRS TG: this is assembly from country code (293 for Slovenia) and 999 for TG for Brandmeister. 293999 is for Slovenia.

Report Slot: In Europe is allowed to transmit Digital APRS only on Time Slot 2.

Call Type: Digital APRS must be set to Private call.

PTT: options are OFF and ON. If you choose ON, that every time you released PTT button radio will transmit APRS.

2.0 Digital APRS registering at Brandmeister.

For Digital APRS you must be registered to Brendmaister. Please check what type of DMR repeaters are in use in your country.

Go to the following web page: https://brandmeister.network/

Klick register and filled up all necessary data. Sometimes you need to way a while that your account be to confirmed.

After confirmation click to Login and put in your credentials.

Click on your call sign on the right upper corner and choose Selfcare.

Brand: Choose Chinese radio.

Language: Choose your language on drop down menu.

APRS interval: choose 60s.

APRS Callsign: put your callsign and extension from -1 to -15.

APRS Text: put your text in, but MAX 12 letters!

APRS Icon: choose your Icon which will be displayed on web pages like aprs.fi and aprsdirect.

In Call GPS, Compact/CSBK data and Text Capture: leave to OFF.

AirSecurity/TOTP: OFF

Hotspot Security: if you have a hotspot, then put in your personal password.

Do not forget to press SAVE button at the end.

3.0 Channel setting in your code plug for analog APRS

For test make one analog channel and name it APRS ANA.

Put correct RX and TX frequency for your country. Check picture above.

Move slider to the right and under APRS choose APRS(A) for this analog channel.

Column marked with RED - you can choose from OFF to 9 APRS(A) in drop down menu.

Row marked with Green is channel we made for test. You need to choose APRS (A).

As you can see you can choose analog APRS(A) on any channel!

WARNING: analog APRS will work only on analog channels!

4.0 Channels settings in code plug for Digital APRS

NOTE: in Europe digital APRS is allowed to transmit only on TS2!

On your digital channel, set everything as normal talk channel, TX, RX frequency, Power, TX, RX Time Slot, TX, RX Colour Code… etc.

At the end of the row, on the right side, under the APRS column for TS 1 choose 2, and for TS2 choose 1 - that mean current channel.

Under APRS Menu you need to choose Report Channel, filled in proper APRS TG, you need to choose TS2, Private CALL and under PTT is option, when you released PTT button APRS will be sent.
Now press button WRITE that everything will be written to your radio and wait that radio reboot itself.

5.0 How to obtain GPS Lock on your radio

5.1 Option 1

You need to be in open spare/area and have visible look to sky. Turn on radio and wait that radio lock to the GPS satellites When Radio locked to the satellite you will observe green icon in the upper centre of the screen. If there is NO GPS lock icon is RED.

5.2 Option 2

You can buy a kit of two GPS antennas with SMA connector and connector for external power supply. One is receiver (install it outdoor) and second antenna is transmitter (install it indoor), connect external power supply and you have GPS signal in your room.

6.0 DISLACIMER

I’m NOT TAKING ANY RESPONCIBILLITY for any sort of damage or any sort of interferences you may make with your radio equipment.

Everything you do, you do it on your own risk, don’t blame me, if there will be some damage or not working. Read manuals again!

If you not familiar with DMR please take your time and search on web or ask any of your colleague what DMR is and how it works.

If you not know how to program your radio, then ask any of your friend how to do it.

WARNING: Firmware is not finish yet so Digital APRS will transmit and proper work only on TS2

DO NOT CHOOSE Digital APRS to work on TS1, because IT WILL NOT WORK and you will make an unnecessary traffic on TS1!

NOTE2: Digital APRS will work only on digital channels!

That guide is completely my project and its only lead you how to set up your radio to send Analog and Digital APRS.

We are working very hard to fix firmware in the near future that all function will be operational

It's AES 128 standard.

When trying to open the DB25-G CPS, you may encounter an error that a necessary file for the program to run is missing. Navigate to the folder where the application is located and right-click on the App: DB25_GMRS_CPS.exe Select Run as Administrator - Windows will now find the file in the same directory as the App and allow you to use CPS.