Search found 930 matches
- Fri Apr 26, 2024 2:35 pm
- Forum: General discussions
- Topic: Simplex repeater possible?
- Replies: 2
- Views: 156
Re: Simplex repeater possible?
Yes, it is called Single Frequency Repeat and is available on high end DMR radios from the likes of Motorola and Hytera. As Daniel says it also needs DCDM support on the handhelds to differentiate the timeslots. It doesn't need a duplexer as it is single frequency. However it does need radio hardwar...
- Thu Apr 25, 2024 10:40 pm
- Forum: Baofeng DM-1701 / Retevis RT-84 specific
- Topic: DM-1701 - Shouldn't it show up as a serial port"
- Replies: 2
- Views: 241
Re: DM-1701 - Shouldn't it show up as a serial port"
You are correct.
The original firmware does not enumerate as a com port.
OpenGD77 does enumerate as a com port in normal use.
Both radios enumerate as an STM DFU device when set to download firmware. (This is defined in the radios bootloader which remains untouched by OpenGD77. )
Colin G4EML
The original firmware does not enumerate as a com port.
OpenGD77 does enumerate as a com port in normal use.
Both radios enumerate as an STM DFU device when set to download firmware. (This is defined in the radios bootloader which remains untouched by OpenGD77. )
Colin 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: 2946
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...
- 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: 853
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...
- Mon Apr 08, 2024 10:36 am
- Forum: TYT MD-9600 / Retevis RT-90
- Topic: Odd CTSS decode issue
- Replies: 10
- Views: 863
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...
- 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: 1229
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 ...
- 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: 1229
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.
- Wed Apr 03, 2024 11:41 am
- Forum: CPS
- Topic: New CPS 2024 03 30
- Replies: 15
- Views: 3240
Re: New CPS 2024 03 30
I think you have Latitude and Longitude confused.
Latitude can't be more than +- 90 degrees.
Latitude can't be more than +- 90 degrees.
- 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: 332
Re: Anyone knows the version of this pcb?
That looks like what we refer to as the V5 board.
- Fri Mar 29, 2024 3:39 pm
- Forum: TYT MD-9600 / Retevis RT-90
- Topic: Westcom DM880B
- Replies: 8
- Views: 763
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...