[TenTec] Omni V Audio

Bwana Bob wb2vuf@qsl.net
Thu, 05 Sep 2002 21:38:09 -0400

I had an audio howl in my Paragon, only when using the internal speaker.
The fault turned out to be a poor shield connection on one of the
shielded cables. I think that it was the cable plugged into socket 57 on
the IF/AF board. Look for a bad connection on the plug.


				Bob WB2VUF 

Robert & Linda McGraw K4TAX wrote:
> John:
> My Omni VI+ gives about the same audio level as you describe, i.e. volume
> control about 8 to 9 o'clock is very comfortable. I use an external speaker
> which is in the power supply.   As to advancing the volume more and getting
> a feedback, I'd suspect that you are using the internal speaker.  This
> happens on my Paragon more so than on the OMNI VI+.  It's a mechanical
> feedback path.  I've found that an external speaker generally solves the
> problem.
> Now, If the MONI control is turned up and you transmit and you have the
> receiver VOL up, yes you'll get a feedback.  The TX audio is fed back to the
> MONI pot which simply mixes it into the RX audio path.  As to the MONI
> changing the tone, probably due to some phase cancellation in the electrical
> plus acoustic path.  Haven't tried it, but wouldn't be surprised however.
> Typically one should use headphones when using the MONI audio.  I keep mind
> turned down because it doesn't tell me what I want to know.  The MONI point
> is pre ssb modulator and all RF stages.
> I wouldn't tamper with the audio gain.  If you want to tame it a bit, add a
> 6.8K 1/4W resistor between the AF MIN and AM GAIN on connector 55 on the
> LOWER POT BOARD.  I think the OMNI V and VI+ are the same in this area.
> 73
> Bob K4TAX
> ----- Original Message -----
> From: "John Huffman" <hjohnc@core.com>
> To: "tentec" <tentec@contesting.com>
> Sent: Thursday, September 05, 2002 12:29 PM
> Subject: [TenTec] Omni V Audio
> > I'd be interested in comparing my Omni V to the Omni V's others own.
> > Specifically, how loud is the audio?
> >
> > I get full room sounding audio from the speaker with the AF knob at 8
> > o'clock.  The minimum setting is at 7 o'clock and anything above 9 o'clock
> > sounds like it's going to blow out the speaker.
> >
> > Occasionally I get the howl of feedback at any volume setting above the
> > minimum.
> >
> > The setting of the monitor control in the back changes the tone of the
> audio
> > (this is while receiving, no transmitting).
> >
> > It sounds to me like the audio amplifier is much too powerful, but I don't
> > see an inside adjustment in the manual for backing it off.
> >
> > Is this typical?   Does your monitor control in the back change the audio
> > tone?  How can I reduce the amplification of the audio amplifier?
> >
> > Thanks in advance & 73 de K8HJ
> > John
> >
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