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Reply-To: "VLBI - ASI/CGS Matera" <vlbi@asi.it>
From: "VLBI - ASI/CGS Matera" <vlbi@asi.it>
To: "Ed Himwich" <weh@ivscc.gsfc.nasa.gov>, <bec@haystack.mit.edu>,
        <dgg@aquila.gsfc.nasa.gov>, <petrov@kuestner.geod.uni-bonn.de>
Cc: <aen@dopey.haystack.edu>, <colucci@mlrohp1.atsc.allied.com>,
        <tme@cygx3.usno.navy.mil>
Subject: Matera spurious problems
Date: Wed, 14 Jul 1999 16:10:07 +0200
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Status: R

Dear Brian,
as we wrote to Leonid Patrov , we suspect that the cause of the spurious
signal is the coupling between the IF1 and IF2 band in the Down
Converter.The coupling factor of the Down Converter is on the order of 30dB
and since we have strong RFI'S in S band we see the strongest RFI's also in
the IF1.
I would like  to mount in our antenna the old Down Converter that we have
and to use it for the S band during the next experiment (CORE-67).
In this way we will use the current Down Converter for the  X Band and the
old for the S band.
What is your opinion?

Regards

Luciano Garramone