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Re: [TowerTalk] Mystery rotator is Ham-M Series 4, 1966

Subject: Re: [TowerTalk] Mystery rotator is Ham-M Series 4, 1966
Date: Thu, 2 Feb 2012 09:37:29 -0500 (EST)
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John, if you have a 24 to 30v (not ctritical) transformer and a motor  
starting capacitor you can "rig" a testing circuit. 
Start with the brake terminals (1 and 2 IRC) and listen for a loud clunk  
when the brake release is energized. Then the voltage is applied to the motor 
 terminals. There are three motor leads, left, right and common. The 
capacitor  connects between the left and the right leads.
An ohm meter will confirm proper operation of the direction potentiometer  
as the motor turns.
If you can locate a copy of the control box schematic, it would make the  
job identifying the various terminals easier.
Gerald K5GW
In a message dated 2/2/2012 8:23:37 A.M. Central Standard Time, writes:

It looks like the unit I have is a Ham-M Series 4  made in 1966.  Under the 
bottom pole mount section was stamped "  4   6 0 6" which is said to mean 
Series 4,made in 6th week of  1966".  And all this only if I am interpreting 
it correctly.   It'salso known as the Ham II I think.
Manufacturer was Cornell-Dubilier and  according to Norm's FAQ's a Ham-M 
used a single-levered control box with a  meter.  If anyone has a spare, I'm 
open to offers.Right now I can't  really test this thing and for all I know 
it may have problems.
Thanks to  everyone for the input.  Haven't used a rotor since a kid so it 
was fun  tofollow this out and revisit this brand.
73, John


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