[Johnson] Re: [Hallicrafters] RFI

[W4AWM at aol.com]

Hi Mike,

I had a similar problem with an Ademco control panel at my parent's home.  
Every time I would get on 75, the system would alarm even if it was not armed.  
My solution was a huge pile of Rat Shack ferrite cores.  I put one on every 
lead going into the alarm control box, including the power pack which was a wall 
wart.  This drastically cut the problem, although there were still one or two 
freqs on 80 that would still set the thing off. I quickly learned to avoid 
those. I guess something was resonant somewhere!

73 and GL,

John,  W4AWM




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