Zipper? I was thinking something more gastro-intestinal. ;-)
Yes. I hear it in my VI. There's no sign of it whatsoever with the audio at
normal levels (7-9 o'clock).
Do you hear the 2-5kHz or higher tone, also? I don't hear it at normal levels,
but if I advance the AF gain above 9:30 o'clock, then I can just begin to hear
it.
73,
dale, kg5u
-----Original Message-----
From: Robert McGraw <RMcGraw@blomand.net>
To: tentec@contesting.com <tentec@contesting.com>
To: <tentec@contesting.com>
Date: Friday, February 04, 2000 14:50 PM
Subject: [TenTec] Omni Noise
>
>The Omni VI+ is one of the quiestest on the market. I wonder if the
>noise in the speaker or phones is being overated based on actual
>receiver gain.
>
>My Omni doesn't have any perceivable noise when the volume control is
>all the way down. With the input terminated into 50 ohms the front end
>noise and IF noise will mask any and all AF noise.
>
>With the AF gain at max, the RF gain at min (counter clockwist) there is
>a small amount of digital noise heard in the headphones. I use some
>Sony Pro-10's just because I happen to have them. There's no noise heard
>in the speaker. Advancing the RF gain the front end & IF noise begins
>to be heard as the control reaches the 1 oclock position. From there
>on, it's all front end noise.
>
>A word of caution. Be careful in getting the audio output loaded with a
>bunch of C or L. It might take off in a supersonic scream, one you'll
>never hear, and then the audio output device goes puff! It gets really
>quiet after this event.
>
>Question: With the RF gain all the way down (counter clockwise) and the
>AF gain at max, can you hear the zipper noise as the main tuning dial is
>moved? I'd like to read your findings on this.
>
>Anyway, the NR (DSP) kills all of it. That's what the button is for. I
>can still hear the weak ones that most folks can't hear so.... what's
>the beef?
>
>73
>Bob K4TAX
>
>
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>
>
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