Search found 928 matches

by G4EML
Thu Apr 11, 2024 9:55 pm
Forum: TYT MD-UV380/390 / UV380/390 Plus 10W / Retevis RT-3S / Baofeng DM-1701 / DM-1701B / Retevis RT-84
Topic: UV380 + DM-1701 Beta 2023 03 08
Replies: 12
Views: 2890

Re: UV380 + DM-1701 Beta 2023 03 08

Yes, as mentioned before we know the the radio can do DCDM but we don't know how to do it! As Roger said, DCDM seems to be a vendor specific feature and as such is not well documented in the ETSI DMR spec. Likewise the limited HRC6000 documentation barely mentions it. It might be possible to generat...
by G4EML
Wed Apr 10, 2024 8:05 pm
Forum: TYT MD-UV380/390 / UV380/390 Plus 10W / Retevis RT-3S / Baofeng DM-1701 / DM-1701B / Retevis RT-84
Topic: Flat audio (9600baud G3RUH) data port from SP/MIC?
Replies: 4
Views: 840

Re: Flat audio (9600baud G3RUH) data port from SP/MIC?

In theory it would be possible to have flat audio option for the radio, at least as far as the actual RF chip is concerned. However there is no control over the additional audio components in the microphone and speaker paths. So the end result may not have a flat response, especially at the low freq...
by G4EML
Mon Apr 08, 2024 10:36 am
Forum: TYT MD-9600 / Retevis RT-90
Topic: Odd CTSS decode issue
Replies: 10
Views: 845

Re: Odd CTSS decode issue

Making a recording probably wouldn't help. The tones won't be recorded. It is not unusual for CTCSS to sometimes be affected by individual voices. The transmitting radio should filter out any low frequencies in the voice before adding the CTCSS tone and likewise the receiving radio should filter out...
by G4EML
Mon Apr 08, 2024 10:23 am
Forum: TYT MD-UV380/390 / UV380/390 Plus 10W / Retevis RT-3S / Baofeng DM-1701 / DM-1701B / Retevis RT-84
Topic: DMR not working; analog is fine
Replies: 10
Views: 1196

Re: DMR not working; analog is fine

Your description indicates that you are accessing the repeater OK but the content of your transmission is not being accepted. You have checked the talkgroup settings, timeslot and colour code, that only really leaves your user ID. Have you entered it correctly? Some Repeaters will only pass traffic ...
by G4EML
Sun Apr 07, 2024 10:58 pm
Forum: TYT MD-UV380/390 / UV380/390 Plus 10W / Retevis RT-3S / Baofeng DM-1701 / DM-1701B / Retevis RT-84
Topic: DMR not working; analog is fine
Replies: 10
Views: 1196

Re: DMR not working; analog is fine

From your description it sounds like you are accessing the repeater OK but possibly with the wrong Talkgroup set. Or maybe you have programmed a private call instead of a group call. I would check your talkgroup programming.
by G4EML
Wed Apr 03, 2024 11:41 am
Forum: CPS
Topic: New CPS 2024 03 30
Replies: 15
Views: 3093

Re: New CPS 2024 03 30

I think you have Latitude and Longitude confused.
Latitude can't be more than +- 90 degrees.
by G4EML
Tue Apr 02, 2024 6:46 pm
Forum: TYT MD-9600 / Retevis RT-90
Topic: Anyone knows the version of this pcb?
Replies: 2
Views: 320

Re: Anyone knows the version of this pcb?

That looks like what we refer to as the V5 board.
by G4EML
Fri Mar 29, 2024 3:39 pm
Forum: TYT MD-9600 / Retevis RT-90
Topic: Westcom DM880B
Replies: 8
Views: 621

Re: Westcom DM880B

Your main problem may be internal PCB damage. The PCB is an 8 layer board with the 12V supply running on one of the internal layers. The place you can see the burning is where the internal layer links to the bottom layer. If it has got hot enough to damage the insulation between layers then it might...
by G4EML
Fri Mar 29, 2024 12:55 pm
Forum: TYT MD-9600 / Retevis RT-90
Topic: Westcom DM880B
Replies: 8
Views: 621

Re: Westcom DM880B

The burnt area in your picture is not a component, it is a PCB track. This track links the 12V Battery supply (on internal PCB layer 4) to the 'always on' 4V regulator that in turn supplies the 3V3 for the main processor. As this is a multi layer board you may have some internal damage which would b...
by G4EML
Tue Mar 12, 2024 2:16 pm
Forum: TYT MD-9600 / Retevis RT-90
Topic: Retevis RT-90 Password in CPS
Replies: 5
Views: 341

Re: Retevis RT-90 Password in CPS

There is no keyboard reset.

The password bypass method is common to all TYT manufactured radios. The RT 90 is made by TYT.

Colin G4EML