[Amps] one mo' SB-220 fix

Bill, W6WRT dezrat1242 at yahoo.com
Sun Aug 23 16:59:10 PDT 2009


ORIGINAL MESSAGE:

On Sun, 23 Aug 2009 12:21:06 -0500, "Roy" <royanjoy at ncn.net> wrote:

>
>The output connectors of my amps face the input of an outboard PIN-diode QSK 
>unit which can't stand much stray voltage. So I built a final solution RF 
>choke: 14 turns of 14 gauge enameled wound on a 2.4-inch ferrite toroid 
>core. That is in a bud box with a male barrel connector mating it to the 
>SO-234 input connector of the QSK switch (the choke box has an additional 
>SO-234 for the cable coming from the amp -- with a through connection 
>inside). SWR readings are totally unaffected...the choke is transparent 160 
>through 10 meters.

REPLY:

Sounds good to me except I would hard wire it inside the amp so that years from
now, someone who doesn't know what it's there for might discard it because "it
doesn't do anything".  :-)

73, Bill W6WRT


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