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Re: [RFI] Help with noise

To: "Jim" <jvpoll@dallas.net>,"K6IA-Howard Stephenson" <kg6wp@yahoo.com>, <rfi@contesting.com>
Subject: Re: [RFI] Help with noise
From: Pete Smith <n4zr@contesting.com>
Date: Sun, 21 Nov 2004 15:54:15 -0500
List-post: <mailto:rfi@contesting.com>
You don't even meed anything calibrated -- just knock down the level so that you're not pumping the radio's AGC. I use a simple voltage divider with one leg variable on mine, inside a metal box.

73, Pete N4ZR

At 03:29 PM 11/21/2004, Jim wrote:

Wow .. how close are those to your station?

Do you have any attenuators you can place in
line with your HT in AM mode (so as to 'get out'
of any possible saturation in the AGC loop) and
try DFing again?

If the HT is AGCing on that noise, and you're
trying to DF it, a change of 10 dB in signal
strength might only be barely detectable in
the 'sound' coming out of the speaker *if*
the noise is strong enough to engage the
AGC to the tune of 20 or 30 dB.

Jim de WB5WPA

----- Original Message -----
From: "K6IA-Howard Stephenson" <kg6wp@yahoo.com>
To: <rfi@contesting.com>
Sent: Sunday, November 21, 2004 2:10 PM
Subject: [RFI] Help with noise


> Can someone please help me with identifying this > noise. It's so strong that I have a hard time time > trying RDF it with my HT and a arrow beam on 132 MHz > AM. All I can get is it's radiating from the PG&E > power lines. I'm thinking it's powerline noise but > PG&E has been draging their feet for over 2 years now, > when it comes to finding and or fixing the problem. > > 28 MHz SSB to AM back to SSB > http://tinyurl.com/58pjd > > 132 MHz AM HT with beam > http://tinyurl.com/44ctl > > 73 > Howard Stephenson K6IA > Watsonville,CA > > > > > __________________________________ > Do you Yahoo!? > Meet the all-new My Yahoo! - Try it today! > http://my.yahoo.com > > > _______________________________________________ > RFI mailing list > RFI@contesting.com > http://lists.contesting.com/mailman/listinfo/rfi > _______________________________________________ RFI mailing list RFI@contesting.com http://lists.contesting.com/mailman/listinfo/rfi

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