[RFI] Line filters for VHF?

N1BUG paul at n1bug.com
Wed May 20 15:04:54 EDT 2015


I have been wondering about this for a while. AC line filters for HF 
are everywhere. Most are characterized up to 30 MHz. Are there some 
that work well at 147 MHz? I got tired of digging through data 
sheets as they all seemed to be for HF.

At the moment I'm trying to stop RFI from a computer. When "sniffed" 
with a detector the case seems quiet but the AC power cord certainly 
is not. The first three Fair-Rite 0443164251 snap on cores helped 
but adding more after that didn't. The line cord and associated 
wiring in the building is still radiating noise.

Thanks,

-- 
Paul Kelley, N1BUG
RFI Committee chair,
Piscataquis Amateur Radio Club
http://www.k1pq.org


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