20 Oct
2007
20 Oct
'07
3:53 p.m.
At 01:28 PM 10/20/2007, Jim Jerzycke wrote:
How close is the Orbit rotator to the Alliance U-110? Norm's Rotor Service has new-in-box U-110 units. 73, Jim KQ6EA
Hi Jim,
Alas, the U-110 is completely different. The OR-360 uses a DC motor whereas the U-110 is AC.
However, I am convinced that it would be very easy to make a simple controller for the U-110 with a couple of triacs and a few opto-couplers hanging on a parallel port
I would use the built-in pulse sensor and interpolate between pulses using the AC line as a time base. This could get you down to around 2-3 degrees accuracy which would be plenty for a 1 meter dish on S-band.
If I need another Az/El system in the future, I would certainly consider the U-110s.
73, Tony AA2TX