[amsat-bb] Re: 145 MHz signal blocking 435 MHz downlink

20 Jan 2014

      Hi, Paul
I use that antenna as my "Field Day" antenna, as it's much easier to 
transport.
At home I use an M2 2M7 and a 420-450-11 with SSB preamps.
73, Jim  KQ6EA
On 01/19/2014 11:21 PM, Paul wrote:
...
Hello Jim,
Do you still use the GulfAlpha 'Easy Sat' antenna?
I'm looking for any advice on improving performance.
I have already installed the diplexer as shown in the article below but it
seems I'm getting no good signal on the 70cm uplink.
Paul Delaney - K6HR
http://k6hr.dyndns.org:8080
-----Original Message-----
From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On
Behalf Of Jim Jerzycke
Sent: Sunday, January 19, 2014 11:09 AM
To: amsat-bb@amsat.org
Subject: [amsat-bb] Re: 145 MHz signal blocking 435 MHz downlink
Buy a diplexer, and connect it as shown in the linked article:
http://www.amsat.org/amsat-new/articles/Mode-J/
I also tilt both of my Yagis so they're 45* to the boom, which makes
them 90* to each other.
Yes, I lose some signal on terrestrial use, but ti helped cut the
coupling, and desense, down quite a bit.
73, Jim  KQ6EA
On 01/19/2014 06:56 PM, Gabriel - EA6VQ wrote:
...
Hi all,
I have a coupling problem in my station when trying to work FO-29.  My 2m
signal is completely blocking the 435 MHz downlink, and so I can't hear my
signal off the satellite. I guess it must be something related to the
distance between the two yagis. (I use the terrestrial horizontal yagis
you
...
can see at http://www.dxmaps.com/jm19hn.html ). With mode-B satellites
there
...
is no problem.  I have tried it with two different 435 receivers, and it's
exactly the same.
Anyone has had this problem o have an idea of the possible reason?  And
what
...
is more important, of some way to solve it?
Thanks for any possible help.

Gabriel - EA6VQ

Web-Site: HTTP://www.dxmaps.com
VQLog 3.1 (build 78): HTTP://www.vqlog.com
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