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Re: Send Your Name/Callsign To Pluto



Well after googling the MinUF for ionispheric passthrough, I think I. 
bruised my brain.....looks like it might start around 3 MHz and and improve 
significantly at 5 Mhz, depending where you are on the earth, as the 
ionosphere is thinner in some places. I just have to assume that with a 
sensitive enough receiver on Pluto, they have already heard my callsign.

How does this relate to ham satellites? I have to assume that as the MUF 
rises there must be some reflectivity exhibited above the ionisphere so that 
there might be or have been cases where 21MHz and 28MHz downlinks (and 
uplinks for that matter) of satellites have deteriorated due to propagation.

Now back to S-band...

Thanks all!

Roger
WA1KAT
----- Original Message ----- 
From: "Reicher, James" <JReicher@hrblock.com>
To: <dmg@bossig.com>; "Rogerkola" <Rogerkola@aol.com>; <amsat-bb@amsat.org>
Sent: Wednesday, June 22, 2005 9:03 AM
Subject: RE: [amsat-bb] Send Your Name/Callsign To Pluto


Not to mention that where it appears to be now is actually where it was
5.3 hours ago.  So, if you're using line of sight, make sure you point
it 10.6 hours ahead.  Does anyone know what the Doppler Shift factor is
for Pluto?

73 de N8AU, Jim in Raymore, MO
-----Original Message-----
From: owner-AMSAT-BB@amsat.org [mailto:owner-AMSAT-BB@amsat.org] On
Behalf Of Dave G.
Sent: Tuesday, June 21, 2005 3:35 PM
To: 'Rogerkola'; amsat-bb@amsat.org
Subject: RE: [amsat-bb] Send Your Name/Callsign To Pluto

Always remembering (of course) to aim your antenna at where
Pluto will be in 5.3hrs.... not where it is when you
transmit...

Dave KK7SS


> Using the mean distance from the Sun, about 5.3 hours. The
> frequency would of course need to be one capable of passing
> through the ionosphere but other than that, it shouldn't
> matter.
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