[Elecraft] Transverter & Satellite work questions?

[Kenneth E. Harker]

On Thu, May 08, 2003 at 12:02:23AM -0400, Rick Tilton wrote:
> 
> Hello all, I too am excited about the transverters being presented for us to
> go building again!!!  But if I may I'd like to fall back to a question from
> way back.  As always I keep trying to figure a way to incorporate the K2
> into satellite work.  From what little I know about the K2 (other than
> building one) it appears that the K2 can only receive and transmit with one
> freq or on the same band at once. There is no way to run full duplex as you
> would need for sat work.

     In the days before "satellite-ready" VHF/UHF radios, it was quite
common to use separate rigs for the uplink and the downlink frequencies.
There's no problem running full-duplex in this scenario, as the two
radios are on different bands and using different antennas.

     If I were to do this with K2s, I would probably use a DEMI 144-28ECK
(http://www.downeastmicrowave.com/PDF/144-28ECK.pdf) inside the downlink K2,
with an outboard 2.4GHz downconverter (probably also DEMI.)  For the 
uplink K2, I'd use the upcoming XV432 transverter (assuming it will
cover 435 MHz as well as the usual 432 MHz range) or a DEMI transverter.

     If you want automatic Doppler shift correction, several satellite
tracking software packages can do this for you.  Most support the concept
of separate uplink and downlink radios.  You just need two serial 
ports on the PC instead of one.

-- 
----------------------------------------------------------------------------
Kenneth E. Harker      "Vox Clamantis in Deserto"      kharker@cs.utexas.edu
University of Texas at Austin                   Amateur Radio Callsign: WM5R
Department of the Computer Sciences          Central Texas DX & Contest Club
Taylor Hall TAY 2.124                         Maintainer of Linux on Laptops
Austin, TX 78712-1188 USA            http://www.cs.utexas.edu/users/kharker/
----------------------------------------------------------------------------