[amsat-bb] Re: Wish List, The Ideal VHF/UHF Sat Rig

John Geiger aa5jg at yahoo.com
Mon Mar 1 17:42:33 PST 2010

Actually I would like to see something like the FT817 does, where you have 6 or so antenna jacks on the back and you can menu select the jack for each band, so you could put 6m and 2m on one jack if you have a dualband antenna, or put 2m/70cm on one, etc.

73s JOhn AA5JG

--- On Mon, 3/1/10, James Duffey <jamesduffey at comcast.net> wrote:

> From: James Duffey <jamesduffey at comcast.net>
> Subject: [amsat-bb] Re: Wish List, The Ideal VHF/UHF Sat Rig
> To: "MM" <ka1rrw at yahoo.com>
> Cc: "James Duffey" <jamesduffey at comcast.net>, amsat-bb at amsat.org
> Date: Monday, March 1, 2010, 7:15 PM
> You forgot to include 222 MHz. With
> 222 MHz, you would sell a lot to weak signal VHF guys. It is
> even more lacking in commercial gear than satellite capable
> rigs.
> I loved Mode A, so I second including 28 MHz. Plus if you
> don't include 222 MHz, people who have transverters can use
> 28 MHz as an IF. 
> I assume that you are talking about two radios in a single
> box, or if not you should be. One of the radios at least
> should have a separate receive input to facilitate separate
> feedline runs to a mast mounted preamp. That simplifies
> switching at the antenna a lot, particualrly with a built in
> sequencer (by band).
> Two antenna inputs per band. This would allow a high gain
> antenna and an omnidirectional antenna to be used without
> antenna switching external to the radio. The ability to
> share a single antenna input between band or bands would be
> nice. 
> I rove a lot and would like the rig for that. For roving,
> 100W per band, perhaps 30W-50W on 902 and 1296 is the
> minimum acceptable for portable use. If the power is
> adjustable per band, I do not see the problem with this
> power level. Also, there is a lot to be gained in tropo work
> in going from 25W to 100W, lots and lots.
> Good front end filtering is essential.
> With a SDR, why not build in a computer with tracking,
> logging, digital modes available. Just plug in a keyboard
> and mike and go. 
> IF output is very useful for lots of things. 
> A pair of K2s, equipped with the XV50 to XV432 series
> transverters come close to meeting your requirements, as
> does a K3 equipped with the subreceiver and XV144 to XV432
> transverters. In particular, the Elecraft implementation of
> transverter interface and switching is very nice. - Duffey 
> --
> James Duffey
> Cedar Crest NM
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