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Re: Drake 2880 Problem with AO-40 ???



This is how I have mine. Next hack is to replace the active device with a
MGA-86563 and evaluate the results. I still have not changed the frequency.
Reception is at 123.??? and I haven't blown the thing up in a whole month .
. 8-0=

----- Original Message -----
From: Malcolm M. Preston <np2l@att.net>
To: <K7xq@aol.com>; <amsat-bb@AMSAT.Org>
Sent: Saturday, May 19, 2001 8:46 PM
Subject: Re: [amsat-bb] Drake 2880 Problem with AO-40 ???


> Jeff, Bdale Garbee, KB0G gave an excellent run down on this Saturday
morning
> in Dayton.  He is using the Drake and recommends a preamp.  I picked up a
> DEM 13ULNA 2.4 gh preamp ($85 kit, $120 assembled) at the hamvention.  He
> presented figures showing this combination to be very comparable with the
> best as to gain and noise.  He did suggest the preamp be mounted directly
on
> the antenna with a barrel N connector if you can do it.
>
> Mal, NP2L
>
> -----Original Message-----
> From: K7xq@aol.com <K7xq@aol.com>
> To: amsat-bb@AMSAT.Org <amsat-bb@AMSAT.Org>
> Date: Wednesday, May 16, 2001 7:02 AM
> Subject: [amsat-bb] Drake 2880 Problem with AO-40 ???
>
>
> Hello All,
> In the wake of hearing about the AO-40 S-Band Transponder Output turned on
> and having successfully received a few minutes of telemetry on a very low
> perigee pass a few months ago, I decided to listen for signals from AO-40
> recently. Unfortuneltly, the Drake 2880 does not appear to have sufficient
> Noise Figure by itself and an external preamp looks like its required.
>
> Is any one experiencing their Drake 2880 to be deaf ???
> Is a external preamp required ???
> If so, where can I get one with use with the Drake ???
>
> I do know about a modification / Gaasfet device that can be installed in
the
> RF section of the Drake but did not consider installing it due to the fact
> that there are reports that many are using the converter as is with no
> problems.
>
> The antenna is a 13 turn RHCP Helix. I understand many are using this same
> converter and antenna and hearing/working the satellite just fine.
>
> Jeff K7XQ
>
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