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6 meter audio problem

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Mike k7MXB

6 meter audio problem

Hi All,

I have K3 with the 100 watt amp and the ATU. When operating on 6 meters, I am experiencing a, "growling" sound in the audio in SSB mode plus what sounds like feed back when the MH2 mic is keyed. The audio on all other bands, including 10 meters, is fine. I have the mic gain set at 8 and the compression at 21. Any thoughts?

Thanks,

Mike
K7MXB

Greg - AB7R

Re: 6 meter audio problem

Mike,

Could it be an RF issue in the shack? I notice similar behavior when I turn my
moxon toward the shack but it goes away when I point in another direction. The
antenna is on a push-up mast just outside the shack. When I use the K3 tuner on a
wire antenna well away from the shack I don't see the problem at all.

-------------------------
73,
Greg - AB7R
Whidbey Island WA
NA-065

On Wed Jan 21 13:05 , Mike k7MXB sent:

tp2194602p2194602.html

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W8ZN

Re: 6 meter audio problem

In reply to this post by Mike k7MXB

Does it do it when the rig is connected to a dummy load? Sounds like good old RF getting into something. If it's clean on a dummy load, then it's probably is RF getting into something. I assume the rig and power supply are properly grounded? What kind of SWR do you have on the antenna?

Terry

-------------- Original message ----------------------
From: Mike k7MXB <[hidden email]>

>
> Hi All,
>
> I have K3 with the 100 watt amp and the ATU. When operating on 6 meters, I
> am experiencing a, "growling" sound in the audio in SSB mode plus what
> sounds like feed back when the MH2 mic is keyed. The audio on all other
> bands, including 10 meters, is fine. I have the mic gain set at 8 and the
> compression at 21. Any thoughts?
>
> Thanks,
>
> Mike
> K7MXB
> --
> View this message in context:
> http://n2.nabble.com/6-meter-audio-problem-tp2194602p2194602.html
> Sent from the Elecraft mailing list archive at Nabble.com.
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com

KD7PY

Re: 6 meter audio problem

In reply to this post by Mike k7MXB

k3 with a Commander amp 1200 out, 7 el M2 at 55FT right over the shack and no problems on 6 mtrs
my Mic set at 25 & comp 15 with the MH2 mic

Ed K7WIA
Seattle Wa

KD7PY

Re: 6 meter audio problem

In reply to this post by Mike k7MXB

I just did a check on mine with your mic & comp settings and it sounds bad.
set your mic gain with the comp off....5-6 bars on the alc graph. then turn on the comp at a low setting a adjust it upwards...go into the TEST mode and listen to yourself with headphones...
it sounds like the mic is set to low and you are trying to componsate it with the comp setting