[TenTec] audio on Omni-VI+

[Dr. Gerald N. Johnson]

Communications audio isn't full and robust. It has a limited bandwidth 
by the IF filters and proper audio to limit you hearing atmospheric and 
circuit noise, hum, and rumble. Adding bandwidth to any of these reduces 
the S/N of the desired signal and allows you to filter more atmospheric 
and circuit noise and QRM with your ears.

I often use a passive low pass filter on the speaker to reduce filter 
leakthrough and audio state high frequency noise outside the IF filter 
pass band. One I use is described at: 
http://www.geraldj.networkiowa.com/papers/speakerfilter.pdf
Its really handy for cleaning out DSP artifacts.

73, Jerry, K0CQ

On 2/6/2011 8:31 AM, yash at aol.com wrote:
>
>   Have been using my ,new to me ,Omni VI+ for a few weeks,like the rig,hard to fault for a 10+ year old rig. I have one problem that I would like to change. The audio quality. In stock form the rig sounds "nasally" to me ,constricted and choppy. I installed the Inrad audio kit ,2 caps and 1 resister,it made a nice change in the quality of the audio. I noticed that INrad also mentions changing the OEM 6 MHz filter with a #755 of their design. Has anyone done this filter change? Is there another route to getting the audio sounding full and clean with this rig? Other than the audio the VI+ is great.
> thanks
> dale wt4t
>
>