[TowerTalk] TowerTalk Digest, Vol 72, Issue 40

[W5KI at aol.com]

Terry,
 
>From my experience, it is the controller, if the rotor appears to turn  
freely and smoothly and just the reading is bad.
 
Check that the internal pot in the rotor unit goes from "about" zero ohms  to 
 "about" 450 ohms moving the rotor full left to full right.   The plug must 
be removed from the controller to make the reading.  Easiest  thing is to 
visually move rotor, disconnect plug, measure the two  appropriate pins.  Full 
left, disconnect, measure (expect zero ohms).   Move "about" 180 degrees right, 
disconnect plug, measure (expect 180  ohms).  Then move full right, disconnect 
plug, measure (expect 450  ohms).
 
If that checks okay, I think you have a controller problem (like MANY  of us 
have had).  And that is VERY common.
 
Steve, W5KI
 
 
Date: Thu, 11 Dec 2008 14:17:20 -0500
From: "Terrence R. Redding  Ph.D." <terry at oltraining.com>
Subject: [TowerTalk] Yaseu Rotor

I  have a Yaesu G-800 rotor and while it turns fine, the rotor control  only
moves about a quarter of the dial, but the rotor itself appears to  be
turning nearly four times that amount.

Any idea what might be  wrong?  Is it in the rotor or the controller?

Terry -  W6LMJ


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