[amsat-bb] Re: Terrestrial QRM to FM satellites

Bob Stewart bob at evoria.net
Thu Sep 20 13:57:48 PDT 2007

No, it's certain that it's on the uplink.  The weaker stations
are having trouble getting in, and the signals disappear when
the satellite pass is over.  The strength of the signal is closely
related to movement of the satellite, and my S-meter doesn't
change vs the satellite when the signals are there.  

In my case, there is absolutely no local activity on 70cm below
440 that I have been able to find, other than some kind of 
digipeater, so anything I hear on 70cm is from a satellite.


--- Scott Wilson <s.wilson at yahoo.com> wrote:

> > There are apparently several stations.  
> How sure is everyone that the QRM is on the uplink frequency? I have
> noticed some QRM, but it's usually MUCH stronger than the downlink, and
> will almost always completely over power the satellite signal. I've just
> assumed that it's local 70cm activity from some locals who don't know any
> better.
> Scott
> NW2S
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