[Elecraft] Common mode chokes

[Mel Farrer]

Check Jim's tutorial on RFI.  You will need some clip on #31 cable ferrites, I think.....
Mel, K6KBE


      From: Cortland Richmond <ka5s at earthlink.net>
 To: elecraft at mailman.qth.net 
 Sent: Sunday, August 7, 2016 2:54 PM
 Subject: Re: [Elecraft] Common mode chokes
   
I had a similar problem in 2005 when noise from a 2kW Honda got into my 
RV on FD.  Lacking any ferrites etc I borrowed a plastic "milk bottle 
box" and wound about 30 feet of extension cord around it., which worked 
well as a temporary fix.

Cortland
ka5s

On 8/7/2016 2:21 PM, elecraft-request at mailman.qth.net wrote:
> I have an inverter generator producing S9 noise on 3.5Mhz, and S7 noise on 7Mhz. Higher frequencies are clear.
> If I were to use a trifilar wound choke on the lead from the generator, what would be the best mix...43, 77 or?....

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