[amsat-bb] Re: Interference from repeaters

i8cvs domenico.i8cvs at tin.it
Mon May 23 17:03:55 PDT 2011

Hi Dick G4BBH

Same problem in Italy ! This will be discussed during the next IARU Region-1
Conference in Sout Africa upon request from Austria.

73" de

i8CVS Domenico

----- Original Message -----
From: "Richard Ferryman" <g4bbh at btinternet.com>
To: <amsat-bb at amsat.org>
Sent: Tuesday, May 24, 2011 1:37 AM
Subject: [amsat-bb] Interference from repeaters

> I have for some time wondered what was causing a considerable amount or
QRM (S9+60dB) to the ISS downlink on 145.800. It took a while to identify as
there is no CW ident etc. but I have now discovered this is a new D-Star
repeater on our repeater channel RV63  which is 145.7875 MHz, only a couple
of kHz from ISS and inside the doppler shift range.  It seems very poor
planning to place high this powered high sited repeaters so near to the
satellite allocation. Is this becoming a common problem and are repeaters
also causing any problems to uplinks?
> Dick G4BBH
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