[amsat-bb] Re: mode J filter / Comet CF416c
glasbrenner at mindspring.com
Fri Dec 28 10:18:07 PST 2007
>From: Ken Shutt <kgshutt at cox.net>
>I would recommend putting the preamp as close to the antenna as possible.
>The diplexer should go between the radio and pre amp. If you are planning
>to feed dc to the preamp on the coax, you need to make sure the diplexer
>will pass the dc to the preamp.
>73 de Ken W5KQ
I think Kyle is wanting to use the diplexer as a high-pass filter in front of the preamp to prevent the 2m uplink signal from overloading the preamp, as explained at http://www.amsat.org/amsat-new/articles/Mode-J/ .
73, Drew KO4MA
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