1. =I agree with Bob.  You don't need elevation in order to operate through any AMSAT LEO satellite.  In fact, I operate CW on the linear birds with nothing more than a dual-band (2m/70cm) whip on a metal mount, on my roof.  On an FM satellite, though, the biggest problem is uplink QRM.  This has led to a regrettable situation in which too many people run too much EIRP.  If you operate during unpopular times or when the satellite is above an ocean or other unpopulated area, the QRM won't be so bad.  73 Ray W2RS

From: z man <zm1267@gmail.com>t
To: Gary <gary_mayfield@hotmail.com>
Cc: amsat-bb@amsat.org
Sent: Sat, Mar 6, 2021 11:38 pm
Subject: [AMSAT-BB] Re: AO-10

As a matter of fact I tried a couple of weeks ago with my small setup. I did not hear the beacon carrier (last I heard it several years ago it was just a single tone which changed with the slow rotation of the bird) on 145.812. I remember only having limited success in making contacts when she was nearing perigee AND was sunlit. Maybe someone else has had better luck recently???

Larry
N1MIW

On Sun, Mar 7, 2021, 12:10 AM Gary <gary_mayfield@hotmail.com> wrote:
Speaking of AO-10 - Has anybody given a listen for the old girl lately?

73,
Gary "Joe", kk0sd

-----Original Message-----
From: Jim Walls <jim@k6ccc.org>
Sent: Saturday, March 6, 2021 9:54 PM
To: amsat-bb@amsat.org
Subject: [AMSAT-BB] Re: TV rotor interface to SatPC32

On 03/06/2021 19:39, Robert Bruninga wrote:
> In my opinion, you dont need elevation for any existing AMSAT nor do
> you need an OSCAR array since we have no HEO birds and LEO's are so
> close, there is 6 to 10 dB right there.  And with nmodest beams, the
> beamwidth is wider than the inaccuracy in the rotator.  My design
> simply used the 1 RPM rotatino of the motor to keep track of position
> and after each pass, or on edmand, it woiuld drive CW (or CCW) into
> the stops, zero the counter and then consider that zero and count from
> there.  Tilt the beams up modestly to 15 degrees and you have plenty
> of gain.   When the LEO satellite is above that it is 6 to 10 dB
> closer and plenty strong enough.  And when it is below 15 degrees it
> is far away on the horizon and still totally within the main beam of
> the modest beam.
>

Low tech, but I'm NOT taking down my AO-10 class antennas just so I can use a low tech rotor controller..
Very happy with my FoxDelta ST2.  Now to get the radio working and actually get back on the birds...

--
73
-------------------------------------
Jim Walls - K6CCC
jim@k6ccc.org
Ofc:  818-548-4804
http://members.dslextreme.com/users/k6ccc/
AMSAT Member 32537 - WSWSS Member 395


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