[Moon-net] Array Pointing Accuracy

[John Peters]

Hi,

Your -3dB beamwidth is about 18 deg I think... so few degrees off is no
problem. I used to adjust my antenna only once every 15 minutes..

73! De John PA5MS

-----Oorspronkelijk bericht-----
Van: moon-net-bounces at list-serv.davidv.net
[mailto:moon-net-bounces at list-serv.davidv.net] Namens Dave Anderson, K4SV
Verzonden: maandag 5 november 2007 19:48
Aan: EME Reflector
Onderwerp: [Moon-net] Array Pointing Accuracy

Hi All,
 
I have another question that I would ask to have answered.  I have just
erected a new H frame festooned with 4 M2 2MXP20's.  As I tweak this antenna
system I thought it would be nice to know exactly how close must I track the
Moon.  The obvious question is, of course, right on the moon.  But you and I
both know not every antenna system tracks exactly, there is always some
positioning error in the rotors ETC.  Just so I am clear on this, what is
the acceptable pointing accuracy so I can keep within the maximum gain?
 
I have played a bit by jockeying the antenna around to see if I can peak the
signal and it seems to be a bit broad.
 
Thanks in advance,
 
Dave Anderson, K4SV
Tryon, NC
828 777-5088
 
www.K4SV.com

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