Playmaster Units
from the
Raio and Hobbies

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A list of all the playmaster and a few other articles from Radio and Hobbies

This is the Playmaster described in 'A typical complete playmaster system' December 1959 It is an Ultra Linear 10W + 10W circuit with silicone rectifiers

The Control Unis is No 9 July 1959, the front panel was created on the computer and printed in negative (ie black lines on a white background) and 'reversed' by the local copy shop on their digital copier and then laminated.
ANYONE GOT ANY IDEAS FOR PRINTING ON TO AN ALLUMINUM PANEL?
there use to be a product called 'Scotchcal' apparently now longer available
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