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Re: Rotor/Antenna orientation

The Uni_Trac 2003 software has new algorithms in it which take better
advantage of the Yaesu G5500's 450 degree azimuth to eliminate most
flipping.  Only occasionally will you find a pass that needs to flip with
this setup.


Don Woodward
AMSAT 33535

----- Original Message ----- 

"Freeman P. Pascal IV" wrote ...
Sent: Thursday, May 20, 2004 09:45
Subject: [amsat-bb] Rotor/Antenna orientation


Another question I have is how tracking software handles passes that are
directly over head of an observer?  All the elevation rotors I have seen
have the capability to flip past the 90 deg mark (straight up).  I would
expect this would be required to keep up with satellites in LEO since
the closer a satellite pass is to being directly over head the less time
a rotor control system has to rotate the az rotor 180 deg.  How do most
rotor control systems handle this?


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