RFI
[Top] [All Lists]

Re: [RFI] What was that noise?

To: rfi@contesting.com
Subject: Re: [RFI] What was that noise?
From: Gary Johnson <gwj@wb9jps.com>
Date: Fri, 25 Jun 2021 09:29:15 -0700
List-post: <mailto:rfi@contesting.com>
I use my Ridgid drill charger as a demonstration device when giving RFI talks 
to clubs. It plays an almost musical sound on all HF bands, something the 
audience always enjoys. Then I coil up a half dozen turns of the cord and 
dramatically apply the largest snap-on type 31 ferrite. Noise in the receiver 
nearly disappears, and I usually can get a round of applause.

Gary Johnson NA6O  
gwj@wb9jps.com


_______________________________________________
RFI mailing list
RFI@contesting.com
http://lists.contesting.com/mailman/listinfo/rfi

<Prev in Thread] Current Thread [Next in Thread>