Gary,
Hmmmm. I am not familiar personally with the ARSWIN, other than it has a good rep. So if you see the hunting with the ARSWIN program, then that is the place to solve the problem. It would not be unreasonable for there to be the equivalent dead band adjustment there, as in most such programs, but I would be guessing beyond that. Perhaps someone here has the needed experience. Otherwise, drop a note to Pablo. He has a great record of support.
Alan WA4SCA
Hi Alan
The fluctuations are observed without the tracking program. Are you familiar with ARSWIN interface program? I can see the fluctuation when I am using ARSWIN to calibrate the rotators in particular the Azimuth section. I calibrate and set the minimum and maximum setting for each rotator. It is prevalent during this process.
I am using Nova. Where would the dead band be defined in this tracking program?
Thank you. I would be so pleased if this is just an adjustment.
Gary
-------Original Message-------
From: Alan P. Biddle mailto:APBIDDLE@UNITED.NET Date: 2/17/2008 5:12:10 PM To: AMSAT-BB@amsat.org Subject: [amsat-bb] Re: Yaesu G-5500 Azimuth Rotator Fluctuation Problem
Gary,
There is nothing in the rotator which should normally cause the problem. All tracking programs have a place to set a "dead band" which defines when the antenna is "close enough" to the calculated value. If that dead band is set too narrow, or to zero, the controller is likely to hunt back and forth as you describe. Depending on your array, a window of a few degrees should be fine. Something to test, in any case.
Alan WA4SCA
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