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Re: [RFI] Noise centered around 20 meters

To: rfi@contesting.com
Subject: Re: [RFI] Noise centered around 20 meters
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Sat, 23 May 2020 17:17:10 -0700
List-post: <mailto:rfi@contesting.com>
On 5/23/2020 5:03 PM, Gary wrote:
It’s probably been there since I bought this place.

Have you studied Dave's material and mine? Two things we both recommend are 1) buy or borrow an inexpensive SDR and install one of the many freeware programs that lets your computer control it. 2) Set it to provide a waterfall covering the frequency range(s) where you hear noise, both to learn the character of the noise (electronic or power line), and WHEN it's present. Does it go on and off at any regular times? The slides for my talks list several inexpensive SDR receivers that were available when I wrote it 3 years ago, and stuff like this has only gotten cheaper and better.

http://k9yc.com/KillingRXNoiseVisalia.pdf

73, Jim K9YC


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