[amsat-bb] Re: IARU coordinated frequencies for LitSat-1

Alan wa4sca at gmail.com
Thu Sep 12 06:01:12 PDT 2013


There is actually very little problem, and even an opportunity, in the frequencies.

FO-29 has a high inclination, while anything deployed from the ISS will be approximately 51 degrees.
The overlap of the orbits will be few and short, and may give some interesting double hop

SO-50 is a bit more problematic.  It has a similar inclination to the ISS, and anything deployed from
it.  I didn't have time to do a careful calculation, but most of the time their footprints/mutual
visibility will not overlap, except for an occasional period of 3-5 orbits. 
Finally, anything deployed from the ISS will have a short lifetime, depending greatly on the altitude
of the ISS when it is launched.

You can play with a good tracking program such as SatPC32 in multitrack mode to get an idea of how the
orbits fit together.



-----Original Message-----
From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On Behalf Of nx9b at comcast.net
Sent: Wednesday, September 11, 2013 9:14 PM
To: amsat-bb at amsat.org
Subject: [amsat-bb] Re: IARU coordinated frequencies for LitSat-1

Did anyone else notice that the transponder downlink frequency is exactly on the center frequency of
FO-29's uplink or that the Packet downlink was on the SO-50 uplink (without the 67Hz tone)?? 

Seems like this wasn't very well 'coordin ated'. I hope those freq's were misprints. 
Sent via AMSAT-BB at amsat.org. Opinions expressed are those of the author.
Not an AMSAT-NA member? Join now to support the amateur satellite program!
Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb

More information about the AMSAT-BB mailing list