[amsat-bb] Re: TS2000 ~436.798 MHz Birdie Solution
domenico.i8cvs at tin.it
Thu Dec 1 13:04:06 PST 2011
----- Original Message -----
From: "John Wright" <ham at g4dmf.co.uk>
To: <amsat-bb at amsat.org>
Sent: Thursday, December 01, 2011 6:24 PM
Subject: [amsat-bb] Re: TS2000 ~436.798 MHz Birdie Solution
> At 17:55 30/11/2011, you wrote:
> >Hi John,
> >I had heard of the down converter solution before and purchased
> >a used down converter. Unfortunately it seemed to pick up the TS-
> >2000 bird nearly as well as the TS-2000. I just lashed the setup
> >together so maybe taking more care to isolate the converter from
> >the TS-2000 might improve my results. I'll have to give it a try
> Mount the down convertor at the aerial/masthead! way out of range for
> the spurious
> and you can use cheap cable for the 10mtr down feed line!
Hi John, G4DMF
To mount the down convertor at the aerial/masthead seems to be
a good solution to way out of range from the TS-2000 but to
transmit in 70 cm using the same antenna you need in addition
a good coax relay antenna mounted.
The relay common port must be connected to the 70 cm antenna
and the normally closed contact NC must be connected to the 70 cm
transmission line while the normally open NO contact must be
connected to the converter RF input.
With the above configuration to receive 70 cm using your converter
you need only to excite the relay coil.
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