Re: [amsat-bb] external RX antenna for FT-847

["Edward R. Cole" <al7eb@xxxxxxxxxxxxx>]

>From: Estes Wayne-W10191 <W10191@motorola.com>
>Wayne replies:
>
>I have seen those "external receive antenna" mods described on a couple of
web sites.  As far as I could tell they permanently wire the FT-847 to use
a separate receive antenna.  Is that correct?  Or do they provide some
means to easily switch the receiver back to the "main" TX/RX antenna?
Most FT-847 owners don't want to permanently disable 144 MHz transceive
capability.

Wayne the modification cuts the coax from the 144 T/R circuit to the
receiver preamp.  So you have two connectors in addition to the normal 144
Antenna port.  It is easy to run the receiver input into a manual coax
switch, to transfer between receive-only inputs such as a preamp or
microwave converter or back the T/R antenna.

I plan on this mod for both 144 and 432.

Ed 

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