GD-77 usage problem.

elite22 · Post by **elite22** » Tue Dec 21, 2021 5:21 am

after I updated the radio to the latest beta version I can't hear anything, not even VFO radio scan mode turns on the led but no sound comes out and I can't even transmit any radio from the band error. serve more for nothing or run it someone help me radioditty gd-77 ... someone please help

F1RMB · Post by **F1RMB** » Tue Dec 21, 2021 6:27 am

Hi,

Have you read the FAQ:
http://www.opengd77.com/viewtopic.php?f ... 37f48811f5

Have you followed the flash procedure:
http://www.opengd77.com/viewtopic.php?f ... 37f48811f5

Same for the User Guide:
https://github.com/LibreDMR/OpenGD77_Us ... r_Guide.md

Cheers.
---
Daniel

PS: I will rename the title of the thread, as it's misleading.

elite22 · Post by **elite22** » Tue Dec 21, 2021 3:59 pm

Thank you , I 'll be able to solve the problem on analog to be able to hear in scanner mode I changed bandwidth to 25khz it would be the default in the 460.00mhz range , but in DMR mode I can not hear even when scanning with filter disabled I have tried everything LED access more I don't hear anything ..how do I solve this problem trying to listen to other Tgs public services and other private HT here at work I did the test and nothing? thank you in advance for answering me and trying to help me!!

ok1pt · Post by **ok1pt** » Tue Dec 21, 2021 7:27 pm

elite22 wrote: ↑
Tue Dec 21, 2021 3:59 pm
Thank you , I 'll be able to solve the problem on analog to be able to hear in scanner mode I changed bandwidth to 25khz it would be the default in the 460.00mhz range , but in DMR mode I can not hear even when scanning with filter disabled I have tried everything LED access more I don't hear anything ..how do I solve this problem trying to listen to other Tgs public services and other private HT here at work I did the test and nothing? thank you in advance for answering me and trying to help me!!

For DMR mode, again: Did you read and carefully followed ALL STEPS in the flash procedure ? Including download of one concrete issue of an original firmware and setting the path to it in the CPS flash tool ? Does the flasher window show [+DMR] in the window title ?
Otherwise, the radio will rx/tx on FM only, no DMR.

elite22 · Post by **elite22** » Tue Dec 21, 2021 8:34 pm

Hi, I follow all the steps like this shows that I made the video there it shows scanning mode, it goes through a frequency that is transmitting, turn on the led but no sound comes out. I even disabled the radio filter. I don't know if it's a problem or settings

Firmware info
OpenGD77
Built
16:59:00
Jul 11 2021
[ 584f3af D ]

youtu.be/tEvIT4Ifmpg

F1RMB · Post by **F1RMB** » Tue Dec 21, 2021 9:18 pm

I see no signal here (see the rssi bar).

elite22 · Post by **elite22** » Tue Dec 21, 2021 10:42 pm

I did not understand

F1RMB · Post by **F1RMB** » Wed Dec 22, 2021 7:13 am

In your video, I see no reason why the scanner should stop.
You are claiming that your transceiver does not produce any sound, but this video doesn't try to demonstrate this.
Also, in your early posts you wrote that you were running the latest beta, but in the one with the video link, it's July 11th release, which is definitely not the latest beta.
Also, I hope you're aware about the fact that there are many other digital modes, apart DMR, which are unsupported by the firmware..

elite22 · Post by **elite22** » Wed Dec 22, 2021 8:24 pm

my problem is I can't scan digital frequencies, only analog when I scan analog frequencies it listens to a frequency when a radio is in communication, whereas the digital one only detects more, no audio comes out, understand ?

Firmeware
OpnGD77
Built
Dec 19 2021
[6081ba3 D ]

OE1MWW · Post by **OE1MWW** » Thu Dec 23, 2021 7:59 am

In you video you are doing a VFO scan, so all kind of signals may appear in that frequency range,
the GD77 will lock on those signals and because they may be anything else, but not a DMR transmission,
no audio will be heard. Are you sure, it locked on a DMR signal?

And if you try to chase & listen to other services (legal ?), all kind of encoding can exist.
OpenGD77 supports FM and DMR dual time slot Tier I and Tier II

Program a known DMR repeater frequency pair in CPS, upload the codeplug to the GD77 and try to listen on such a channel.
Install 'RepeaterBook' or 'RFinder Worldwide Repeater Dir' on your mobile, so you will find the nearest repeater in your area.
Besides this, this app will show you if they are DMR, D-Star or C4FM - and only FM & DMR can be heard with OpenGD77.

It will work - straight forward, without any problems. As you said: 'understand?'

73's de OE1MWW
Wolfgang

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