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Re: [RFI] RFI On Talking Thermometer

To: <RFI@contesting.com>
Subject: Re: [RFI] RFI On Talking Thermometer
From: "K1TTT" <K1TTT@ARRL.NET>
Date: Fri, 26 Mar 2010 16:45:47 +0000
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Is it battery powered or does it have a wall wart or direct wall plug?
Which bands seem to be worse?  I would try ferrites with as many turns as
possible on every wire into it first.  Remember, a single clip on ferrite or
a single pass through a core doesn't provide much attenuation at hf.  Then
try wrapping it in aluminum foil and maybe shielding the cable to the
outside probe.  


David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://www.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
 



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