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Re: UHF weekend Jan 14-15 on ISS



I'm impressed!

Roger
WA1KAT

----- Original Message ----- 
From: "RANSOM, KENNETH G. (JSC-OC) (BAR)" <kenneth.g.ransom1@jsc.nasa.gov>
To: <sarex@amsat.org>
Sent: Monday, January 09, 2006 5:48 PM
Subject: [sarex] UHF weekend Jan 14-15 on ISS


> This weekend (Jan 14-15 UTC) Bill McArthur plans to operate on the UHF
band
> exclusively. It is his desire to work all continents on the UHF band from
> the International Space Station.
>
> The frequency he will be using will be 437.55 simplex. Due to the high
> Doppler effect on this band, one will need to operate split frequencies
for
> most of the pass. A very simplified chart showing memory assignment for
> transmit and receive with 5 KHz spacing is below as an example .
>
> Mem.     TX     -    RX
> Ch A - 437.540 - 437.560  Acquisition of signal (AOS)
> Ch B - 437.545 - 437.555
> Ch C - 437.550 - 437.550  Time of closest approach (TCA)
> Ch D - 437.555 - 437.545
> Ch E  -437.560 - 437.540  Loss of signal (LOS)
>
> Good Luck and 73,
>
> Kenneth G. Ransom - N5VHO
> ISS Ham Radio Project Engineer
> Johnson Space Center
> Houston, TX
>
> http://spaceflight.nasa.gov/station/reference/radio/
> http://www.issfanclub.com/
> http://oscar.dcarr.org/index.php
> http://www.ariss.net/
> http://www.amsat.org/amsat/archive/sarex/48hour/threads.html
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