International Space Station in cross-band repeater mode!!
Robert E.Seastrom
rs at seastrom.com
Fri Jul 22 09:07:02 CDT 2005
Iain McFadyen <mcfadyenusa at yahoo.com> writes:
> The rate of change of the observed signals from the initial
> frequency to the final frequency, is highly dependent on the
> elevation of the pass: If the pass goes directly overhead your
> location, then your uplink frequency should remain almost stable at
> 437.791 till almost half way through the pass, then during a period
> of about 1 minute, you will have to move your transmit frequency
> down up to 437.809, then for the remainder of the pass, your
> transmit frequency will remain at 437.809. If however the pass is
> very low on the horizon, then the rate of change of doppler remains
> almost constant all the way through the pass. Good luck! Iain
> KI4HLV McLean VA
You would think that someone would have written a satellite tracking
program that spoke CI-V and would tune the radio for you, eh? Not
"cheating" any more than having az-el auto-track on your antennas, and
CI-V boxes are a heck of a lot cheaper than az-el antenna mounts..
---Rob
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