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RADIO BROADCAST ADVERTISER
The **B" without a Buzz
P,
IONEERS in battery elimination, our laboratory and field research work has led to the development of five models to meet the voltage and current requirements of any receiver.
Leading engineers, magazines and set manufacturers have given their unqualified endorsement to the Mayolian "B" Supply Units because their use means more efficient performance, greater volume, better tone — as well as a permanent solution of the "B" battery problem.
A Mayolian will give your receiver — regardless of make or type, — a continuous, uniform, noiseless "B" current from your light socket at half the cost of operating a 2 5 -watt lamp.
There is a Mayolian for every receiver and pocket book. Model 611, employing the new Raytheon BH tube — the most powerful "B" Supply Unit on the market — will operate any set and any power tube, $57.50. Model 607 for D. C, $35.00.
MAYOLIAN
RADIO CORPORATION
1 668 Webster Ave.. New York, N.Y. ,
Pioneers in Battery Elimination
Type 612— The new laboratory-built Mayolian delivers 180 volts and is absolutely noiseless in operation. AH voltages are adjustable. Complete, with Raytheon tube $42.60
Type 609 — Encased in a beautiful mottled blue-gray metal cabinet, 5 inches wide, 10 inches long, and 9H inches high, with a polished aluminum base and top, and engraved Bakelite panel. It harmonizes with any receiver and the furnishings of any room. Complete, with Raytheon tube.
$55.00
The nearest Mayolian Dealer will demonstrate. Write us/
The Power of Niagara — The Quiet of an Arctic Night
•jf Examined and approved by Radio Broadcast tA: