Discussion in 'Antennas, Feedlines, Towers & Rotors' started by N5YPJ, Apr 23, 2012.
Anyone have recommendation on a rotor repairman?
Richard / N5YPJ
When mine wear down, I get new rotors at AutoMart.
Do you mean rotator? Which kind is it?
Rotator ...sorry. Yaesu G-450A. The rotator part turns fine full 450 degrees (it overlaps) but the indicator needle doesn't move at all from north.
Last rotator I owned was an Alliance HD 73 so you might know I'm not to up on rotators.
The Yaesu G-450A is a bit more complicated for it's display then some of the older rotators. The rotator you have uses a variable resistor for position feedback. That signal is fed to your control box and through some op-amps and then your display. You can do a continuity check and see if the variable resistor is okay. If it is then your problem will be in the control box.
You can get the schematic and the manual here; http://home21.org/index.php?option=com_remository&Itemid=5&func=startdown&id=80&lang=en.
You could even buy a cheap DVM, hook it up to the lines coming from the rotator and read the resistance. Make a chart that you can use as reference of the position. The Yaesu way of doing this is far more complex then it needs to be.
Hope this helps
Make sure the plugs on both ends (control box and rotator) are fully seated and all the pins are really making contact.
I have the manual but many thanks for the link to PDF schematic and 400% increase!
Most problems with Yaesu rotators are traced to pins not making adequate contact in the connectors either at the motor or at the controller. In fact, every one I've seen had that problem. The connectors can appear to be seated, and the pins still not making contact.
Yaesu USA (California) is your PRIMARY repair center and parts for USA.
ALL Yaesu OEM replacement parts come from Japan ( No US suppliers used), now via China after 2011 earthquake & tsunami effects.
If you do not use Yaesu USA -- You are on your own, unless you find a mechanically inclined amateur, who would assist you.
CATS and Norm's Rotor Service ONLY work on, provide parts, and repair USA mfg. rotators (CDE, HyGain, Alliance). NO repair work on Yaesu/Kenpro rotators -- due to parts availability.
These Yaesu controller boxes have TWO common problems, reported since 1990s on various amateur rado Internet boards.
1. Stripping of nylon gears (W3DHJ)
2. Broken rubber belt.
Another super intelligent post from the AWSOMEST. Maybe you ought to talk to Norm's Rotor Service and CATS Rotor Service (ROTOR DOC) about changing their names so we know that they are talking about Rotators and not Brake or Ignition Rotors. It is pretty confusing for SOME people.
Boy, my copy of Webster's New Universal Unabridged Dictionary is getting a "workout" today!
Rotator, n., a person or thing that rotates.
Rotor, n., the rotating part of a motor.
It seems to me that "rotor" comes slightly closer to the unit that alters the direction of an antenna in either the horizontal plane or the vertical plane. Technically, to be a "rotator" the entire unit would have to rotate, not just a portion!
Also, the term used to describe this unit utilized to alter the direction of an antenna, is, within the CDE manuals, "rotor"!
Yaesu, on the other hand, uses the term "rotator" to describe the units manufactured by that company.
As such, there seems to be no universally accepted terminology within the amateur radio community as to which term is proper!