[App_rpt-users] fighting echo within the soundcard.

Don Russell w9drr.ham at gmail.com
Mon Feb 25 07:56:00 UTC 2013


found the fix, auto gain control on the cm108 is getting turned on.

Question is why is it getting turned on?
If I open alsamixer and turn it off, no echo.
On restarting asterisk, it comes back on.

I tried storing the current settings with alsactl store and rebooting.

Same thing. At least I know what's causing it. I was going crazy
thinking it was some wiring crosstalk or something.



--
Don Russell, CBRE CBNT
W9DRR - ARRL OES, Technical Specialist
http://www.socialengineer.us


On Sat, Feb 23, 2013 at 10:11 PM, Don Russell <w9drr.ham at gmail.com> wrote:

> I am building a new node from scratch.
> atom pc, uri-x, 2 SM50's.. nothing fancy.
>
> I am getting a 1/2 second echo, like
> you have another radio on in the room.
>
> I did the normal tuneup.
> got these parameters.
> rxmixerset=125
> txmixaset=400
> txmixbset=0
> rxvoiceadj=2.725307
> rxctcssadj=4.019996
> txctcssadj=300
> rxsquelchadj=850
>
> I tried with/without the rxboost. no change.
> I have battled this in the past and I just
> don't remember what the fix was. It's been a
> 2 years since I have had a node up. trying to
> get back in the swing of things again.
>
> I did bring up alsamixer, the card looks good, mic is not in playback mix.
>
>
> --
> Don Russell, CBRE CBNT
> W9DRR - ARRL OES, Technical Specialist
> http://www.socialengineer.us
>
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