Search found 919 matches

by G4EML
Wed Feb 21, 2024 8:51 pm
Forum: TYT MD-9600 / Retevis RT-90
Topic: Voltage Oddity
Replies: 21
Views: 969

Re: Voltage Oddity

Sounds like one of two things,

Your power supply can't provide enough current. It needs to be able to provide at least 10 Amps. The current on UHF is often higher than VHF.

RF is getting into the power supply and causing it to shut down. How close is your antenna?

Colin G4EML
by G4EML
Sat Feb 17, 2024 1:22 am
Forum: TYT MD-UV380/390 / UV380/390 Plus 10W / Retevis RT-3S / Baofeng DM-1701 / DM-1701B / Retevis RT-84
Topic: GPS slow to find location
Replies: 3
Views: 689

Re: GPS slow to find location

That sounds normal for these radios. When the GPS starts up it always has to do a cold start. (Because there is no backup battery). A cold start requires the GPS to download the Orbit data from the satellites. This can take a long time if the signal is weak or fluctuating. Keeping the GPS steady can...
by G4EML
Tue Feb 13, 2024 11:28 am
Forum: TYT MD-9600 / Retevis RT-90
Topic: HELP! Stuck on Settings Updated screen
Replies: 20
Views: 962

Re: HELP! Stuck on Settings Updated screen

It may not be of much use to you but I have found a UK company that claims to have replacement screens.

https://radio-hire.co.uk/shop/accessori ... lcd-screen

Colin G4EML
by G4EML
Tue Feb 13, 2024 10:37 am
Forum: TYT MD-9600 / Retevis RT-90
Topic: HELP! Stuck on Settings Updated screen
Replies: 20
Views: 962

Re: HELP! Stuck on Settings Updated screen

Bruce has already fixed the button issue, he is now talking about a display issue. Unfortunately the display module will be hard to find. TYT themselves may be the only place you can get one. I have heard of them sending spare displays to people via their Facebook account, but I don't know what thei...
by G4EML
Tue Feb 13, 2024 1:18 am
Forum: TYT MD-9600 / Retevis RT-90
Topic: Retained Settings After Flashing OpenGD77 Firmware
Replies: 13
Views: 658

Re: Retained Settings After Flashing OpenGD77 Firmware

Hold P3 when turning on the radio and the press ENT to accept the new settings.
That will reset all settings. Create a new codeplug using the CPS and load it. That will reset all channels.
by G4EML
Mon Feb 12, 2024 11:31 pm
Forum: TYT MD-9600 / Retevis RT-90
Topic: Retained Settings After Flashing OpenGD77 Firmware
Replies: 13
Views: 658

Re: Retained Settings After Flashing OpenGD77 Firmware

This is normal. cS2 indicates that the timeslot is being controlled by your contact setting. When you define a talkgroup or contact you can also assign it a timeslot. Loading new firmware will never reset the channels. They are defined in the codeplug and that never reset. If you want to remove chan...
by G4EML
Sun Feb 04, 2024 12:50 pm
Forum: TYT MD-9600 / Retevis RT-90
Topic: Subaudible decoding
Replies: 2
Views: 510

Re: Subaudible decoding

Yes, that is quite normal. CTCSS decoders in many radios will often respond to one tone either side of the correct one. This is due to the bandwidth of the tone filtering. When scanning tones the firmware stops on the first one it finds. DCS doesn't suffer from this as two adjacent codes are complet...
by G4EML
Wed Jan 31, 2024 12:56 pm
Forum: TYT MD2017 / Retevis RT-82
Topic: TYT MD2017 / Retevis RT-82 Public Alpha version
Replies: 76
Views: 6304

Re: TYT MD2017 / Retevis RT-82 Public Alpha version

Password is the release version. Rxxxx.xx.xx.xx
It is displayed in the title line at the top of the password entry form.
by G4EML
Tue Jan 30, 2024 10:50 pm
Forum: Other unsupported radios
Topic: Quansheng DM600UV
Replies: 5
Views: 699

Re: Quansheng DM600UV

Just looking at the picture it looks like the LCD display is not pixel based but uses individual fixed icons and a small text areas for the frequencies/channels. That would make it very difficult to use with OpenGD77 as it would not support the current display methods and would need major rewrite of...
by G4EML
Sun Jan 28, 2024 3:39 pm
Forum: CPS
Topic: Question: CPS 2024.01.22.01 and programming for Talk Groups
Replies: 5
Views: 1045

Re: Question: CPS 2024.01.22.01 and programming for Talk Groups

Contact and TG List are mutually exclusive on a channel. You either define a contact and that is what will always be used when making a call. Or you define a TG List which allows you to select the contact to be used from the list. Unlike most DMR radios the TG List is used for both Tx and Rx. This i...