[amsat-bb] Just received UAH ARISS contact - much harder to rx than normal. Arrow antenna problem?

John Brier johnbrier at gmail.com
Fri Feb 19 18:28:57 UTC 2016

I'm not comparing the signal to the 20-25 watt Kenwood in the Russian
segment. The Russians haven't done any US contacts since last summer AFAIK,
but it is waaayyy stronger, for sure.

The idea that it was solar panels or orientation might explain it but I did
have difficulty through most of the pass. You.would think signal strength
would change through the pass if it were solar panels at least. Hmm.

On Feb 19, 2016 1:18 PM, "Daniel Cussen" <dan at post.com> wrote:

> The default is to use the handheld from the Columbus module. In some
> cases a mobile rig from the russian segment is used which is much
> stronger. The orientation of the ISS and the movements of solar panels
> also make a difference. So normally the same radio/antenna combination
> as the packet is used, so coverage/signal should be similar.
> Which contact are you comparing the signal to (date/time)? What was
> the max elevation of that contact and what was your max elevation this
> time?
> (There is a plan to replace the faulty mobile rig in the colombus
> module at some stage)
> On 19/02/2016, JoAnne K9JKM <joanne.k9jkm at gmail.com> wrote:
> > It sounded to me like the ISS was using the 5 watt Ericsson HT instead of
> > the higher power Kenwood rig. I've noticed that the signal strength
> varies
> > with the position of the ISS with respect to my station when working
> packet
> > via their HT. I'm running on a vertical until the weather improves to get
> > my
> > yagi back up.
> >
> > --
> > 73 de JoAnne K9JKM
> > k9jkm at amsat.org
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