[AMRadio] Volumax limiter

Jim Tonne Tonne at Comcast.Net
Tue Sep 24 17:53:17 EDT 2013



A long, long time ago CBS Labs brought out a volume maximizing
limiter to control the modulation on an AM transmitter.   They oh so
cleverly called it the Volumax.

I am privileged to have in my possession both an AM Volumax and its
sister for FM, the FM Volumax.   I also have both of those devices
entered into LTspice for circuit analysis.   As a result of maybe 50 or
more  hours of computing and measuring I have what I think is a
quite nice collection of data, measurements and so on.

Are there any folks on this list that would be interested in information
on how those units work?  The data I have is easily sufficient to do
troubleshooting of a defective unit.

On or off the list, makes no difference to me.

- Jim Tonne   W4ENE





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