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Front view of 20V with doors at both sides open for access to power change, PA loading, PA tuning and multimeter controls.
Rear view with doors open, and with covers removed to expose output network at top, and power supplies and blower at bottom. The 20V is completely, quickly accessible for tube change or other servicing.
It was once said of a great American industrialist that "on a clear day he can see ten years ahead."
He couldn't do that today. Neither can anyone else. And because of the murky outlook, many broadcast station owners are losing no time in completing their modernization plans.
A number of those who hold one kilowatt AM grants have bought the new Collins 20V transmitter we announced a few months ago, because investigation convinced them it was the most advanced thousand-watt transmitter in the field.
The 20V is the product of post-war research and new engineering techniques. From the standpoint of design, performance, economy and reliability it will set the pace for many years to come.
Great simplification has been achieved in the circuits associated with the modulator and power amplifier stages, through the use of high gain tetrodes which also permit the employment of lowdrain receiver type tubes in the driver stages. Only 16 tubes, of but 8 types, are used in the entire transmitter.
The 20V is entirely contained in a single, ruggedly constructed, smartly modern cabinet. A large low speed, high volume blower passes 400 cubic feet of fresh filtered air per minute over tubes and components. The tuning and operating controls are conveniently located on the front. Tubes, components and terminals are quickly accessible from the rear.
Write, phone or wire your nearest Collins office for complete information.
BROADCASTING • Telecasting
March 5, 1951
Page 33