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Author Topic: CDR TR-2 rotor questions  (Read 1007 times)
AF5CC
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Posts: 673




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« on: March 27, 2013, 01:09:51 PM »

Here is an oldie but goodie!  I recently picked up a CDR TR-2 rotor from ebay.  I can find little information about this rotor, though.  Does anyone have any information on it, like what size of antennas will it handle, or if the control boxes work with other rotors?  It came with 2 control boxes, so I have a spare to sell or use with another rotor.

John AF5CC
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W9GB
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Posts: 2463




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« Reply #1 on: March 30, 2013, 04:46:29 PM »

Cornell-Dubilier (North Carolina, Cleveland) sold some of the first consumer TV rotators in the early 1950s.
Alliance Manufacturing, based in Alliance, OH was a competitor in TV rotator market.
The Radiart rotors eventually became part of the Cornell-Dubilier Electronics (C.D.E) division.

The 1950s Radiart/CDR rotors (TR-2, TR-4) were FIRST generation designs -- NO braking included.
Radiart Corporation TR-2 Service Bulletin (rare 1954-1957 copy)
https://www.msu.edu/~yurkon/Documents/radiart.pdf

The CDE HAM series, introduced in 1957, added an early brake design for amateur radio owners.
This was improved upon in subsequent versions of the HAM series (see below).
http://victrolla.homeip.net/wo5s/junkpile/cde/ham-m/ham-m.pdf

Cornell Dubilier Electronics sold their rotor division to Telex/Hy-Gain in 1981.
Hy-Gain based in Lincoln, NE decided to support only the AR-22, AR-40, CD45-II, Ham-4, and Tailtwister rotors.
All rights to the other rotors were assigned to Norm's Rotor Service -
 that includes CDE documentation or parts for your CDE TR-2 rotor.

Norm's Rotors Service is the only facility with parts for the original units.
Norm's have almost all parts for the AR-22, AR-33, AR-40, AR-50,
BT-1, TR-44, CD-44, Ham-M, Ham-2, and Ham-3 rotors.
Telex/HyGain sold the HyGain line of rotors to MFJ in May of 1999 --
who still continues to manufacture HyGain rotors from their Mississippi facility.

Norm's Rotor Service or
http://www.rotorservice.com/index.htm

CATS (Rotor Doctor) are your best source for ANY documentation and parts from 60 years ago.
http://www.rotor-doc.com/

Frequently Asked Questions about USA manufactured rotators (Cornell-Dubilier, Alliance)
http://www.rotorservice.com/faqs.htm

Rotor Identification
http://www.rotorservice.com/serv3%20identify.htm
« Last Edit: March 30, 2013, 05:28:05 PM by W9GB » Logged
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