Thread: Antenna rotator
View Single Post
Old 21st Oct 2020, 10:30 am   #1
Steve G4WCS
Steve G4WCS's Avatar
Join Date: Sep 2004
Location: Preston, Lancashire, UK.
Posts: 401
Default Antenna rotator

Not quite vintage but Ive a yaesu g-400 rotator with the round dial controller with an issues so Im calling on the collective

Ive noticed the antenna has gone about 90 degrees out to the controller needle position, the needle does stop a bit at a couple of points and presumably over many rotations backward and forward this hysteresis is adding up. Am I right in thinking that (for now until I can investigate) if I set the antenna position to North (reference point for the controller) then disconnect the rotator from the controller and set the controller to north, then it will all be back in sync.

Googling is pointing to the rotator pot needing changing. Ive attached images of the ones supplied by an antenna place, can I assume that the RS components pot will be a suitable alternative ?
Attached Thumbnails
Click image for larger version

Name:	52E0E976-02B8-42D7-8D38-BF7AAE30F776.jpg
Views:	112
Size:	31.9 KB
ID:	218475   Click image for larger version

Name:	0CF76559-FC00-4F9A-BF3A-1BA4C24717B5.jpg
Views:	102
Size:	32.1 KB
ID:	218476   Click image for larger version

Name:	C7A13292-CB74-4D2A-9FF5-16C2315903F6.jpg
Views:	96
Size:	28.0 KB
ID:	218477   Click image for larger version

Name:	AC833DBE-A1CE-4472-9650-C90F12DF3B64.jpg
Views:	90
Size:	40.2 KB
ID:	218478  
Steve G4WCS is offline   Reply With Quote