Re: [amsat-bb] G-5500 Rotor issue

Yaesu G-5500 Operating Manual http://www.yaesu.com/downloadFile.cfm?FileID=994&FileCatID=155&FileN...

How Things Work. TURN to Page 9, schematic diagram

Meters M1 and M2 are analog meters in the Control Box.

Potentiometers VR5 and VR6, located INSIDE the outside rotator and geared to motor movement, changes resistance -- which is measured and reported on the meters M1 and M2.

Dirty or failing potentiometers are common, and required maintenance with heavily used antenna rotators.

w9gb

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