[amsat-bb] Best HT for satellite operation?

Patrick STODDARD (WD9EWK/VA7EWK) amsat-bb at wd9ewk.net
Fri Mar 10 20:08:19 UTC 2017


You could do that, or use a 2m/70cm diplexer as your filter
and only use the 2m side of the diplexer in line with your
SO-50 uplink radio.

I did something similar for an SO-50 demonstration at a
hamfest a couple of years ago, using two Baofeng HTs with
an Elk log periodic. You can see pictures of this setup in
a video I posted:


I used a UV-82 for the uplink, and a UV-5R for the downlink,
connected through a diplexer to my Elk log periodic. I did
not experience desense with this setup, and made a good
number of contacts during this demonstration. I had to use
the diplexer with my Elk, with only one coax feedpoint, but
the diplexer also served as a good bandpass filter for the


Twitter: @WD9EWK

On Fri, Mar 10, 2017 at 11:21 AM, <skristof at etczone.com> wrote:

> I've used two Baofengs to work SO-50, and the V transmission from one
> still desenses the U reception in the other one, even though they are
> two separate radios.
> Do I put low-pass filter in the transmission line to squash that third
> harmonic?
> Steve AI9IN

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