[amsat-bb] Re: 2 Meter TV Interference

Bob Bruninga bruninga at usna.edu
Wed Dec 7 15:38:36 PST 2011

>> What is needed is a stub filter.  Just a piece of open ended coax 
>> 13" long "T"ed into the antenna lead....
>> The 13" is about 66% of a quarter wave at 2 meters.

> That could work too, but not if they have an active splitter 
> that's distorting and crunching away like a little fuzzbox, 
> generating all kinds of harmonics.

In that case, the stub needs to go on the input of that device.  Though, I
have not seen a lot of "F" connector "T"'s... which would make it easy.  So
best to take a piece of cable with "F"'s on both ends, and "splce" the stub
in the center by soldering carefully and sealing it all up.


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