[amsat-bb] Re: Two Sats

John B. Stephensen kd6ozh at comcast.net
Sun Sep 10 19:33:36 PDT 2006

The satellite has to be either inside or outside the Van Allen radiation
belts. LEOs are limited to 1200 km (usually 800 km) so you need dozens of
them to provide decent coverage. Once the satellite is above the radiation
belts, you get almost 50% coverage anyway.



----- Original Message ----- 
From: <sco at sco-inc.com>
To: <amsat-bb at amsat.org>
Sent: Sunday, September 10, 2006 14:41 UTC
Subject: [amsat-bb] Two Sats

> If two sats like Hamsat (or Echo) were in orbit at the same time and
> could see each other ...
> Could User#1 uplink to Sat-A and then Sat-A would link to Sat-B
> (probably on one of the higher microwave bands) then Sat-B would
> downlink to User#2 and User#2 would uplink to Sat-B and be relayed to
> Sat-A and down to User#1 ??
> If this could be done there would be a much larger footprint and
> launch costs would be far less expensive, correct?
> Les W4SCO
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