Bill, from my experience it happens when there are lots of high power signals
pulling down the RX.
See ya on the bird,
Dave, kn4ok
-----Original Message-----
From: Bill Dzurilla <billdz....@yahoo.com>
To: amsat-bb@amsat.org
Sent: Tue, Apr 6, 2010 9:07 pm
Subject: [amsat-bb] Re: AO-7 Mode C? (Or other reason for varying signal
strength?)
So, folks, does anyone have any thoughts or comments about this issue?
3, Bill NZ5N
--- On Sun, 4/4/10, Bill Dzurilla <billdz....@yahoo.com> wrote:
From: Bill Dzurilla <billdz....@yahoo.com>
ubject: AO-7 Mode C? (Or other reason for varying signal strength?)
o: amsat-bb@amsat.org
ate: Sunday, April 4, 2010, 10:52 PM
Hi folks,
Since starting my effort to work Europe on AO-7, I've found that the very low
levation sigs vary significantly on different
asses. Some mornings I can easily hear my downlink and start working
urope at 0.7 degrees elevation, while other days I can't hear myself
ntil 5 degrees elevation, after the window to Europe has closed. Not
ure if this is due to band conditions, satellite polarization,
bstructions at certain positions, operator error, local noise, or what.
Today I spoke with another experienced AO-7 op and he had an interesting
theory:
n the bad days (when I don't hear my downlink until 5 degress), the sat is in
ode C (lower power). This seems to make sense, because there does not seem to
e any middle ground -- I start hearing my downlink at either 0.7 degrees or 5
egrees, never at 2-4 degrees.
Anyone have any thoughts on this? Are we able to predict when the sat will be
n one mode or another? Or any other explanation for the signal strength
ariations?
73, Bill NZ5N
______________________________________________
ent via amsat...@amsat.org. Opinions expressed are those of the author.
ot an AMSAT-NA member? Join now to support the amateur satellite program!
ubscription settings: http://amsat.org/mailman/listinfo/amsat-bb
_______________________________________________
Sent via amsat...@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
