[Fixed] RX CTCSS does not work...

4O6DTM
Posts: 7
Joined: Sun Mar 01, 2020 12:33 pm

Re: [Fixed] RX CTCSS does not work...

Post by 4O6DTM » Fri May 01, 2020 11:26 pm

I have the same problem. On two local FM repeaters that transmit with ctcss. If other party is over-modulated (to close to mic or too much mic gain) the sound is stuttering. Using the latest firmware from 30.04.2020. No problems when using my other analog radios.

73, 4O6DTM

OH1E
Posts: 96
Joined: Sat Nov 16, 2019 8:59 am

Re: [Fixed] RX CTCSS does not work...

Post by OH1E » Thu May 07, 2020 9:38 am


OH1E
Posts: 96
Joined: Sat Nov 16, 2019 8:59 am

Re: [Fixed] RX CTCSS does not work...

Post by OH1E » Tue May 19, 2020 6:35 am

sorry if im start to be annoying, but created another video just using 2x gd77 to prove again this.
Reason why not much talk about this is ppl not using RX CTCSS.
Hope this video help to reproduce !

youtu.be/VEudaakpI08

kt4lh
Posts: 272
Joined: Sun Jan 12, 2020 4:27 am

Re: [Fixed] RX CTCSS does not work...

Post by kt4lh » Tue May 19, 2020 8:48 pm

I see the problem, the radio on the left cuts and and out, while the radio on the right does not. This ONLY happens when CTCSS is involved? And does it happen with out being so hot into the mic? Are you sure it's a problem with the radio on the left and not some overmodulation of the radio on the right? I'm just trying to isolate and distill the problem down here.

I don't use PL decode anywhere personally, it's not something that's very useful in ham radio with the exception of when a Fusion repeater is in mixed analog/digital mode and it'll transmit a tone on analog so analog radios can open up, but does not transmit it on digital so analog users don't hear the digital noise.

I am missing how this fits into the bugs in this thread though.. the bugs in the thread are about squelch not opening or such, not that it's cutting in and out.

This actually reminds me a bit of the Wouxon UV8D I had for about 3 days until I returned it; it did this exact same thing, but sadly I knew it might when I purchased and sure enough it did. Anyone with a hot mic just cut in and out constantly.

OH1E
Posts: 96
Joined: Sat Nov 16, 2019 8:59 am

Re: [Fixed] RX CTCSS does not work...

Post by OH1E » Sun May 24, 2020 4:35 pm

yes. i put latest opengd77 to right radio and it did the break up right away.
I have compiled latest github version 24.5.2020 included my fix there. Here it is you need 2x gd77 and be sure it will breake up first when using normal gd77 firmware using RX CTCSS. compare to this firmware the change is like day/night
firmware download here MODDED named https://pilvi.titanix.net/s/N07e3KrrXf3 ... 2Ffirmware

Juan Francisco
Posts: 32
Joined: Sat May 09, 2020 4:00 pm

Re: [Fixed] RX CTCSS does not work...

Post by Juan Francisco » Thu May 28, 2020 3:03 pm

and where is the failure in ctss activation? what was the fix or modification in the firmware? Does the pre-release ( D20200507)fix it?

OH1E
Posts: 96
Joined: Sat Nov 16, 2019 8:59 am

Re: [Fixed] RX CTCSS does not work...

Post by OH1E » Thu Jun 04, 2020 6:13 am

Juan Francisco wrote:
Thu May 28, 2020 3:03 pm
and where is the failure in ctss activation? what was the fix or modification in the firmware? Does the pre-release ( D20200507)fix it?
look video above you see it breaking up when using 2x gd77 witch rx ctcss.
the fix is there look few messages back code is there. LINK viewtopic.php?f=11&t=794&start=10#p7899
PRE RELEASE DONT FIX THIS because not everyone can replicate this (i bet they doing it wrong, or dident bother to try)

Juan Francisco
Posts: 32
Joined: Sat May 09, 2020 4:00 pm

Re: [Fixed] RX CTCSS does not work...

Post by Juan Francisco » Sat Jun 06, 2020 9:21 pm

I am going to try recording from my radio, I have the intuition that it has the same problem with a very strong signal and with active sub tone sometimes it breaks.

Juan Francisco
Posts: 32
Joined: Sat May 09, 2020 4:00 pm

Re: [Fixed] RX CTCSS does not work...

Post by Juan Francisco » Sun Jun 07, 2020 7:00 pm

Riku wrote:
Thu Jun 04, 2020 6:13 am
Juan Francisco wrote:
Thu May 28, 2020 3:03 pm
and where is the failure in ctss activation? what was the fix or modification in the firmware? Does the pre-release ( D20200507)fix it?
look video above you see it breaking up when using 2x gd77 witch rx ctcss.
the fix is there look few messages back code is there. LINK viewtopic.php?f=11&t=794&start=10#p7899
PRE RELEASE DONT FIX THIS because not everyone can replicate this (i bet they doing it wrong, or dident bother to try)
A small fragment, if I deactivate sub tone everything is fine.
In video with maximum signal voice is interrupted unless CTCSS was deactivated


youtu.be/uhMo_mXPdgA

oh1fss
Posts: 74
Joined: Mon May 04, 2020 11:53 am

Re: [Fixed] RX CTCSS does not work...

Post by oh1fss » Mon Jun 08, 2020 5:51 am

I have the same problem with GD-77 with OpenGD77 release 20200507: in a FM repeater which sends CTCSS, stations with strong audio (wide deviation?) cause severe stuttering which makes it impossible to understand.

I started using OpenGD77 from release 20200411. I think it did not have this problem?

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