TYT MD-UV380 DMR Rx Missing

SP1KC
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TYT MD-UV380 DMR Rx Missing

Post by SP1KC » Sun May 28, 2023 11:42 am

Hello,
I've using the latest opengd77 version, but with previous it was the same.
During Rx the DMR one of several trasmisiion is missing. Dashboard shows TX normally, on the radio screen RSSI shows the signal,
but nothing happens - no contact name shows, no voice. But when I change the channel knob during this transmission, Rx getting back.
Eco level 0-5 does not solve the problem. The calibration on hotspot was done correctly, however with the original radio firmware, Rx work 100% fine.
I'm not the only one having this problem.
What can be with this?
73, Kris SP1KC

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F1RMB
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Location: Grenoble, France

Re: TYT MD-UV380 DMR Rx Missing

Post by F1RMB » Sun May 28, 2023 12:24 pm

Hi

You're missing few details, you're listening to simplex, duplex, etc
You're not the only one? Can't remember any report like this here....

Are you sure the source of the hotspot calibration is accurate ?

So many (important) details are missing here to help you.

Also, you forgot to introduce yourself, posting in the new members section.

Cheers.
---
Daniel.

SP1KC
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Re: TYT MD-UV380 DMR Rx Missing

Post by SP1KC » Sun May 28, 2023 12:57 pm

I'm sorry, I didn't know that's important for genuine software that works well :|
Hotspot duplex with Rpi Zero W and W0CHP-PiStar-Dash, but on pi-star the DMR Rx also missed.
A colleague does not report the problem so as not to duplicate the post.
I know how to calibrate correct.
It's like the radio sometimes won't wake up, but it is important that moving the channel knob restores Rx.
What else should I add?
73, Kris SP1KC

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F1RMB
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Location: Grenoble, France

Re: TYT MD-UV380 DMR Rx Missing

Post by F1RMB » Sun May 28, 2023 2:58 pm

Still, which TS, does TS Filter is On or Off.
Also, DMR Filtering is set to which value?.

When you transmit with the 390, does the dashboard see your transmission, BER ?

SP1KC
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Joined: Sat Dec 17, 2022 8:11 am

Re: TYT MD-UV380 DMR Rx Missing

Post by SP1KC » Sun May 28, 2023 4:31 pm

TS Filter: Off, CC Scan: Off, DMR Filter: Off, Dashboard always seeing Tx - BER 0.1-0.2%.
I tried diffrent TG, both on TS1 and TS2. Once I changed TS Filter to ON, but it did not help.
Best wishes,
Kris SP1KC

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F1RMB
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Location: Grenoble, France

Re: TYT MD-UV380 DMR Rx Missing

Post by F1RMB » Sun May 28, 2023 6:10 pm

Don't you have any DMR repeater around ?
It would be great to check in other conditions.
BTW, W0CHP stated that is a bad idea to run his fork on a PiZero (you can check his website about this).

SP1KC
Posts: 15
Joined: Sat Dec 17, 2022 8:11 am

Re: TYT MD-UV380 DMR Rx Missing

Post by SP1KC » Sun May 28, 2023 8:33 pm

But why on the original firmware everything works corretly :cry:
Don't have repeater yet :( but about 40km from my qth there is. Maybe try to listen it for few hours..
The man I wrote about earlier has rpi3+ and he has similar problem.
Btw I caught the moment this topic is about. I was listening to Tg91 for a while, everything was fine when all of a sudden rx disappeared:
https://drive.google.com/file/d/18eiMTx ... p=drivesdk
Moving knob and RX return :shock:
Kris, SP1KC

EU1AEQ
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Re: TYT MD-UV380 DMR Rx Missing

Post by EU1AEQ » Wed May 31, 2023 8:32 am

F1RMB wrote:
Sun May 28, 2023 12:24 pm

You're not the only one? Can't remember any report like this here....
I have written about this several times. I have such an error on RT3S, too. Rarely. If you didn't look at the screen, you may not find out that there was no demodulation, just a call was missed.. I didn't keep statistics. The error is sporadic. In addition, demodulation disruptions are also rare. Fixed by turning the channel switch. Fortunately, this happens quite rarely.
How often does this error occur for the topic author?

SA0BUX
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Re: TYT MD-UV380 DMR Rx Missing

Post by SA0BUX » Wed May 31, 2023 10:06 am

What Eco Level do you use ?

You could try with Eco Level=0 or lower the value to see if that makes any difference.

EU1AEQ
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Re: TYT MD-UV380 DMR Rx Missing

Post by EU1AEQ » Wed May 31, 2023 10:56 am

SA0BUX wrote:
Wed May 31, 2023 10:06 am
What Eco Level do you use ?

You could try with Eco Level=0 or lower the value to see if that makes any difference.
I tried. It doesn't change anything. I repeat - my error manifests itself 0-2 times a day (in any case, I notice it), so experiments are almost useless.

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