[GreenKeys] 1953 airborne RTTY unit

Duncan Brown duncanancy at earthlink.net
Mon Oct 5 09:21:14 EDT 2015


The original M32 manual (bulletin #200, Sep, 1947 - on-line somewhere)  
Describes the M31 as a 26VDC unit designed for airborne, shipboard or 
mobile RTTY operation.  There is no mention of a synchronous motor 
available. (But no reason it couldn't be have been fitted with one.)

My impression is that the M31 was designed for the military, but they 
didn't buy many, so Teletype Corp put a sync motor in it, put it in a 
case with a handle & sold them to WU  as "portable" wireline machines.

Duncan
K2OEQ

On 04-Oct-15 22:20, Roy Morgan wrote:
> Greenkeyers, It appears that not all TT-30/AGA-1 machines have the 26 
> volt motor-generator and 35L6 motor control. I have a TT-30/AGA-1 with 
> a governed motor which is marked: Volts: 115 Cycles: 60/DC The machine 
> is unused and unmodified, and has no 35L6. The name plate, however is 
> marked "26 Volts DC” This machine came from the collection of a 
> retired Navy communications officer, and that may be a clue as to the 
> difference. Go figure! (Could someone post the link to “Ed #’s site”? 
> Thanks.) Roy Roy Morgan k1lky68 at gmail.com K1LKY Since 1958 


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