[amsat-bb] Re: az-rotor

Joe Leikhim rhyolite at nettally.com
Fri Nov 30 13:32:54 PST 2012

Did you try the method in the manual first to set the rotor up? I followed the manual and it worked fine.

Subject: [amsat-bb] Re: az-rotor
Message-ID: <ABBEFC4E69E44BE4894A1C23DA4B0F8C at AlPC>
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Hi Erich et al.,

Following suggestion I did the following. Since the rotor goes beyond 180 on the right side of its travel I let it go until it stopped. I then visually noted how much beyond 180 it had gone, divided by 2 and brought the dial back to 360 plus the number just obtained. I then assumed the pot was at its halfway position. I made the following resistance measurements 1-2 was 209.7 ohms, 2-3 was 206.1 ohms, and 1-3 was 415 ohms. Considering the manual guess work I think that is a pretty good result. I then ran SatPC32 and attempted to park the rotor at 360. It was off, I had to park it at 341 for the rotor to actually be at 360. This is basically the same result as before when I was just going by the control box readings. I believe the resistance measurements would suggest that there is not a short in the pot (unless it just happened to be around the halfway point).

At this point I am not sure what to try next

73 Al W8KHP

Joe Leikhim

Leikhim and Associates

Communications Consultants

Oviedo, Florida

JLeikhim at Leikhim.com



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