Hi Friends,

I have an old Boonton 210-A Supersonic Oscillator. I'd like to find a
manual of any sort for it. I checked the usual places and I see
Boonton 211 manuals but nothing for a 210-A. Also, can any of you
tell me about this piece of equipment. How would it have been used?
The dial is 1 to 10 kcs.

Thanks for any help you can give me.

Derek
WB0TUA