Search found 934 matches
- 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: 1647
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: 4397
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: 675
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: 2464
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...
- Fri Mar 29, 2024 12:55 pm
- Forum: TYT MD-9600 / Retevis RT-90
- Topic: Westcom DM880B
- Replies: 8
- Views: 2464
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...
- Tue Mar 12, 2024 2:16 pm
- Forum: TYT MD-9600 / Retevis RT-90
- Topic: Retevis RT-90 Password in CPS
- Replies: 5
- Views: 1029
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
The password bypass method is common to all TYT manufactured radios. The RT 90 is made by TYT.
Colin G4EML
- Thu Mar 07, 2024 10:34 am
- Forum: TYT MD-9600 / Retevis RT-90
- Topic: MD-9600/RT-90 Schematic
- Replies: 3
- Views: 1097
Re: MD-9600/RT-90 Schematic
They are holes! Because this is a schematic from a PCB design program you have to define everything that is connected together. The mounting holes have to be connected to ground. This is also a very early schematic for V2 radios. It will not be correct for later versions. However it is the only one ...
- Wed Mar 06, 2024 10:32 pm
- Forum: TYT MD-UV380/390 / UV380/390 Plus 10W / Retevis RT-3S / Baofeng DM-1701 / DM-1701B / Retevis RT-84
- Topic: Wanted: UV380/390 , DM-1701/RT-84 power calibration testers
- Replies: 10
- Views: 1700
Re: Wanted: UV380/390 , DM-1701/RT-84 power calibration testers
To get 5W output you do need a fully charged battery or an external power supply and a very short good quality connecting cable. Roger, Power adjustment is well known for being difficult. It depends so much on the test cables, dummy load match and supply voltage that I doubt they have very tight tol...
- Wed Mar 06, 2024 8:58 pm
- Forum: TYT MD-UV380/390 / UV380/390 Plus 10W / Retevis RT-3S / Baofeng DM-1701 / DM-1701B / Retevis RT-84
- Topic: Wanted: UV380/390 , DM-1701/RT-84 power calibration testers
- Replies: 10
- Views: 1700
Re: Wanted: UV380/390 , DM-1701/RT-84 power calibration testers
Hi Roger,
Yes I did the SK1/SK2 reset on both radios.
Cheap RF devices probably vary greatly in performance between batches. They may even be using whatever transistor is cheapest at the time.
I think it is unlikely you will find a good compromise for the calibration in all radios.
Colin.
Yes I did the SK1/SK2 reset on both radios.
Cheap RF devices probably vary greatly in performance between batches. They may even be using whatever transistor is cheapest at the time.
I think it is unlikely you will find a good compromise for the calibration in all radios.
Colin.
- Wed Mar 06, 2024 4:18 pm
- Forum: TYT MD-UV380/390 / UV380/390 Plus 10W / Retevis RT-3S / Baofeng DM-1701 / DM-1701B / Retevis RT-84
- Topic: Wanted: UV380/390 , DM-1701/RT-84 power calibration testers
- Replies: 10
- Views: 1700
Re: Wanted: UV380/390 , DM-1701/RT-84 power calibration testers
Hi Roger, Here are the readings from my two radios using the Marconi 2955. MDUV380 145MHz 103, 121, 162 1.16, 2.21, 5.40 73, 100, 118, 158 430MHz 79, 102, 154 1.51, 2.74, 5.80 44, 69, 89, 141 440MHz 81, 105, 153 1.49, 2.74, 5.60 42, 70, 92, 143 450MHz 84, 107, 156 1.53, 2.65, 5.70 43, 72, 95, 145 MD...