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OZ2CPU Radioamateur mainpage
My own private Morse key collection
KEY 32

This is a SPEED X Practice set, Model 450
with build in Buzzer.

Made in San Francisco USA

I don't know when it was made, please help enyone ??

A close up of the buzzer, that really works.
At 4.5 Volts it sounds good and draws 0.065 Amps.