[amsat-bb] Re: Motor for Yaesu G5500 Azimuth Rotator?

Clive Wallis list1 at g3cwv.co.uk
Sun Feb 26 04:15:20 PST 2012


I've been interested in this thread as I have a shorted G5500 elevation 
motor. I reported this several months ago, and found that it was a 
fairly common problem.

I'm waiting for warmer WX when I plan to replace it.  I'm wondering 
whether there have been any reports of the over heating being caused by 
failure of the yahoo control unit or tracker interface. Perhaps sticking 
relays or electronics.  I'm using the LVB tracker.

I can see some situations where the micro-switches inside the rotator 
could fail to prevent damage.

The thermal cut-outs suggested earlier in this thread looks attractive. 
I was also thinking about a PIC solution.   As these rotators are now 
very expensive, and it's a major task for me to install the replacement, 
I don't want to risk another burned out motor.

Any thoughts?

73      Clive     G3CWV

Hitchin, North Hertfordshire, UK

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