Re: Antenna direction calibration
hi, well i will through my $0.2 in, for my home station to get as accurate as i can, i listen for a satellite beacon on one of the SSB's set the radio to track and satpc32 to track, have a radio or wireless mic and take an ht to the roof with me,when i hear the cw tone that sounds ok i am set. then fine tune things from there, mind you i am at a 10* handicap do to thre hills around me, so it takes a few tries, i also do it almost the same way for or portable, but you get the idea, the FM sat's are point and shoot, Rodney kc0zhf
I actually use the sun for aligning the antennas. SatPC32 comes with a program called SuM, which can point the antennas directly at the sun (or moon!). To align the antennas, I look at the shadow of the antennas on the ground, and adjust until the shadow is minimum size. It's really easy, (and you don't need to look at the sun to do this type of alignment).
73!
Dave KB5WIA http://kb5wia.blogspot.com
On Wed, Jul 17, 2013 at 8:29 PM, Rodney Waln kc0zhf@yahoo.com wrote:
hi, well i will through my $0.2 in, for my home station to get as accurate as i can, i listen for a satellite beacon on one of the SSB's set the radio to track and satpc32 to track, have a radio or wireless mic and take an ht to the roof with me,when i hear the cw tone that sounds ok i am set. then fine tune things from there, mind you i am at a 10* handicap do to thre hills around me, so it takes a few tries, i also do it almost the same way for or portable, but you get the idea, the FM sat's are point and shoot, Rodney kc0zhf
Hi Dave, KB5WIA
To align the antennas, I don't look at the shadow of the antennas on the ground, but I adjust the position of the antenna in Azimuth and Elevation until the Sun-Noise received in my Signal Streng indicator is the maximum.
This is very important particularly at very high frequencies using a dish because the feed can be wrongly mounted sligtly off point from the center of the dish and the pencil of the radiation pattern of the dish can be affected by a squint not visible looking at the shadow of the feed at the center of the dish but still existing from the point of view of receiving a less strenght of Sun-Noise.
73" de
i8CVS Domenico
----- Original Message ----- From: "David Palmer KB5WIA" kb5wia@amsat.org To: "Rodney Waln" kc0zhf@yahoo.com Cc: amsat-bb@amsat.org Sent: Thursday, July 18, 2013 7:15 PM Subject: [amsat-bb] Re: Antenna direction calibration
I actually use the sun for aligning the antennas. SatPC32 comes with a program called SuM, which can point the antennas directly at the sun (or moon!). To align the antennas, I look at the shadow of the antennas on the ground, and adjust until the shadow is minimum size. It's really easy, (and you don't need to look at the sun to do this type of alignment).
73!
Dave KB5WIA http://kb5wia.blogspot.com
On Wed, Jul 17, 2013 at 8:29 PM, Rodney Waln kc0zhf@yahoo.com wrote:
hi, well i will through my $0.2 in, for my home station to get as
accurate as i can,
i listen for a satellite beacon on one of the SSB's set the radio to
track and satpc32 to track,
have a radio or wireless mic and take an ht to the roof with me,when i
hear the cw tone that sounds
ok i am set. then fine tune things from there, mind you i am at a 10*
handicap do to thre hills around me,
so it takes a few tries, i also do it almost the same way for or portable, but you get the idea,
the FM sat's are point and shoot,
Rodney kc0zhf
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participants (3)
-
David Palmer KB5WIA -
i8cvs -
Rodney Waln