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Projection engineering (Jan-Dec 1931)

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Page 32 PROJECTION ENGINEERING ASSURED PERFORMANCE PRICES Complete $110.00 Type "B* $75.00 Transmitter only Type "3B" $35.00 Amplifier only Net, F.O.B. Chicago. (Prices quoted include 25 foot cord, plugs and wall plate.) Type "B" Condenser Transmitter Type "3B" Microphone Amplifier In introducing the "INTERNATIONAL" Type 44B" Condenser transmitter with the Type "3-B" Amplifier, we are offering a piece of apparatus which is the result of three years' research combined with mechanical and engineering experience. This Company has, in the past, maintained a reserved policy in the sale of Condenser Transmitters, inasmuch as freedom from trouble in climates subject to wide variations of temperature and humidity, was to be proven. It has never been the policy of this Company to allow the purchaser to perform the experimental work for the manufacturer. Several Condenser Transmitters of this type have been in active, every day operation for the past two years, and from the data obtained on their performance, a Transmitter practically free from trouble or servicing has been developed. Transmitters are tested in actual operation for several weeks before shipment. The Unit is of sturdy construction and is unconditionally guaranteed for one year against any mechanical or electrical failure. Folder "3-B" describes the Unit in detail. WRITE FOR IT! International Siroafccasttng Sqnipm^nt Ca. 3112 West 51st St. Manufacturers of Chicago, 111. Public address ~ Broadcasting systems equipment _ Centralized Radio systems _ Complete Recording systems