[GreenKeys] Collins 709D-1 FSK keyer

[Duncan Brown]

Anyone ever heard of a Collins 709D-1FSK keyer/exciter and /or have any 
info on it?  We just got one in at the AWA Museum.  I looked on the 
Internet and could not find any mention of it.  (I did find mention of a 
Collins 709B-1, but it was about 10 times bigger and black wrinkle 
painted, so apparently a much older version.)

Scratched into the crystal oven case was number in the 3200 range; so 
apparently the unit directly FSKs the crystal and then the unit drives 
the transmitter in place of a regular crystal or VFO.

Picture enclosed.  Any comments on this unit would be appreciated.

Thanks & 73,

Duncan Brown, K2OEQ
USASA  31J30

Antique Wireless Association Museum Asst. Curator, Commercial Equipment
(also Chief TTY operator & repairman)
http://www.antiquewireless.org/



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