[amsat-bb] bad G-5500 rotor

KO6TZ Bob my.callsign at verizon.net
Sat Dec 24 16:33:25 UTC 2016


The big question is, What is it doing or not doing ?

I had a similar problems with both the elevation and azimuth sections of 
one of my G5500's. The problems occurred about 3 years apart.  The 
symptom was I could hear the motor but the rotor did not turn.

The cause was the setscrew that holds the "Bow Tie" cam to the motor 
shaft in the brake came loose.

If this describes your problem, I suggest you check the set screw. If 
not, keep it in mind for the future.


I'm back up here in the frozen north for the holidays and today  had some
time to work on my G-5500's azimuth problem. I took my  5500 control box up
here with me from my station in Florida to help test. Now I've got it down
to the Azimuth rotor itself. I used to have a repair guide for this rotor,
but I haven't worked on one in many years and 2 moves ago and can't find it
anywhere including online. Does anyone have a copy they could email me? I
have the cable disconnected from the rotor control box. I'm interested in
taking some meter readings to try to determine what parts if any to order
from Yaesu. Thanks in advance.

Everyone have a very Merry Christmas, happy holiday, and a HNY.

73 Jeff kb2m

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