[Milsurplus] KY-65

[Ian Wilson]

A KY-65 followed me home from the swap meet today. It appears to be an
electromechanical
device for sending the (numerical) aircraft ID. There is a DC motor,
reduction gearing, and two
plastic wheels with teeth for the codes. The teeth engage microswitches.

This particular unit has been hammfiied, with a small transformer and bridge
rectifier. Also,
a front plate has been added that carries a variable resistor (for motor
speed), on/off switch,
and socket for a keying lead.

My question is WHY this unit would be useful for ham purposes? The Morse
coding wheels
provide something like 6 numerical digits. I don't see how you could
persuade this to be a
long enough sequence for a callsign, for example.

Puzzled.

73, ian K3IMW
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