Search found 612 matches

by G4EML
Sat Feb 04, 2023 10:47 pm
Forum: TYT MD-UV380 / UV390 / Retevis RT-3S
Topic: ReteVis RT3S displays "OpenMDUV380" on startup screen
Replies: 3
Views: 249

Re: ReteVis RT3S displays "OpenMDUV380" on startup screen

The RT3S is an MDUV380 with different stickers on it. The hardware is identical, so there is only one version of the firmware.
by G4EML
Tue Jan 31, 2023 9:42 pm
Forum: TYT MD-9600 / Retevis RT-90
Topic: LED in the microphone
Replies: 6
Views: 251

Re: LED in the microphone

The MD9600 has no software controllable LED indicators.

The Microphone LED is directly controlled by the PTT switch.

Colin G4EML
by G4EML
Mon Jan 30, 2023 9:29 pm
Forum: TYT MD-9600 / Retevis RT-90
Topic: IMPORTANT. New new MD-9600 and RT-90 is not compatible
Replies: 10
Views: 619

Re: IMPORTANT. New new MD-9600 and RT-90 may no longer be compatible

Yes.

The clone chips are unmarked. At the moment we have not heard of any in MD9600 radios.
by G4EML
Mon Jan 30, 2023 11:41 am
Forum: General discussions
Topic: Paying for someone to port the firmware to other radios
Replies: 7
Views: 256

Re: Paying for someone to port the firmware to other radios

As one of the developers I appreciate what you are saying. However my main concern would be that by publicly accepting a donated radio I would feel under a very strong obligation to get it working. That may turn out to be much more work than I am willing to do. As Roger has said the issue lies somew...
by G4EML
Sun Jan 29, 2023 4:59 pm
Forum: TYT MD-9600 / Retevis RT-90
Topic: Time,Date and Location Settings
Replies: 3
Views: 153

Re: Time,Date and Location Settings

Numeric keys on Mic.

A/B key to enter

When Entering Lat/Long use the Up/Down to select N or S
Long press D then Up/Down to switch E or W

Colin G4EML
by G4EML
Sat Jan 28, 2023 4:31 pm
Forum: TYT MD-UV380 / UV390 / Retevis RT-3S
Topic: RT3S firmware won't run
Replies: 60
Views: 2995

Re: RT3S firmware won't run

As Roger said, if your radio returns REV: 0x9 then it will not at the moment work with OpenGD77. None of the developers has one of these radios, so it is almost impossible to develop a fix. Just for completeness My RT3S returns REV: 0x100F which is different to Rogers but still works OK. My MD390 re...
by G4EML
Sat Jan 28, 2023 2:39 pm
Forum: TYT MD-UV380 / UV390 / Retevis RT-3S
Topic: IMPORTANT. New MD-UV380 or RT3S are not compatible
Replies: 50
Views: 3694

Re: IMPORTANT. New Non-GPS MD-UV380 or RT3S are not compatible

We don't know what the cut-off for serial numbers is but it would appear that anything
starting 2211 and after may have the problem.

Colin G4EML
by G4EML
Thu Jan 26, 2023 9:09 pm
Forum: GD-77 / DM-1801 / RD-5R / GD-77S
Topic: DM-1801 transistor part number ?
Replies: 4
Views: 469

Re: DM-1801 transistor part number ?

The GD77 uses AFT05MS004NT1 FETs in both the VHF and the UHF PA stages. Only the tuning components are different. The same device would almost certainly work in the DM1801.

They are easily available from Farnell/Newark or Mouser.


Colin G4EML
by G4EML
Thu Jan 26, 2023 1:16 pm
Forum: TYT MD-UV380 / UV390 / Retevis RT-3S
Topic: IMPORTANT. New MD-UV380 or RT3S are not compatible
Replies: 50
Views: 3694

Re: Possibly not compatible with new Non-GPS MD-UV380 or RT3S

Please can you post the first part of the serial number of the radio that would not work.
The firmware certainly works on my RT3S Non-GPS radio with a serial number starting 2201.

Colin G4EML
by G4EML
Thu Jan 26, 2023 1:12 pm
Forum: TYT MD-UV380 / UV390 / Retevis RT-3S
Topic: RT3S firmware won't run
Replies: 60
Views: 2995

Re: RT3S firmware won't run

In your original posting you said that the serial numbers started with 2105 which would indicate a manufacture date of 2021. You also mention a sticker with the later date 0f 2022 12. Where is that?. I am wondering if the radios are actually old stock which has been re-worked or updated in some way....