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RE: MUF and connecting to sattellites



Jerry,
Don't know if anyone replied to your e-mail but I'll try to explain MUF and
how it could affect satellite communications.

Basically the MUF (Maximum Usable Frequency) is the maximum frequency the
atmosphere will return to earth.  Any transmissions above the MUF will pass
through the atmosphere.  So there shouldn't be a problem with MUF at 14MHz
because you WANT your 29MHz signal to pass through the atmosphere.  Now, I'm
not exactly clear on what happens when the MUF is above the 29MHz satcom
frequency.  I would assume that some of your signal would pass through the
atmosphere and not all of it would be deflected.  But I'm not sure about that.
I'll have to do some more research on that part.


Eric KF4OTN


________________________________

From: owner-AMSAT-BB@AMSAT.Org on behalf of Jerry Weihrauch
Sent: Fri 05-Aug-05 08:48
To: AMSAT-BB
Subject: [amsat-bb] MUF and connecting to sattellites



Does the MUF effect how well one gets their signal to a satellite like
PCSat2 on 29.400?
For instance the MUF around my QTH is about 14 MHz at 12:35 UTC this
morning.
Want to try the 13:30 UTC pass today for PSK31 test.

73,

Jerry   -  K0HZI
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