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188
RADIO BROADCAST ADVERTISER
'N practically every nationally known B eliminator you will find
ClAROSTAT
functioning efficiently as the voltage control— silently and smoothly.
You cannot afford to do without CLAROSTAT in your set or eliminator.
If you are planning to build or improve your receiver write tor a copy of
99
"The Gateway to Better Radio
The manufacturers of the Clarostat have prepared a comprehensive manual of 32 pages entitled "The GATEWAY TO BETTER RADIO" dealing with the application of the Clarostat in all phases of radio reception, amplification, transmission and battery elimination. This manual includes complete directions on how to make the good radio receiver better by the proper application of Clarostats, together with diagrams and descriptions of the latest radio receiving circuits. Complete constructional data is available in this manual on the various types of battery eliminators.
This practical radio manual is sold at the low price of 25 cents to defray printing costs. Obtain your copy either from your local radio dealer or direct from the manufacturers of the Clarostat, remitting the price in stamps or coin.
American Mechanical Laboratories, Inc.
Dept. R. B., 285-287 North 6th St. Brooklyn, N. Y.
one hole mount
ClAROSTAT
Delivers 50 milliamperes at 180 volts
Operates without hum or noise Better than dry batteries
THE Valley B Power Unit takes the place of B batteries by providing plate voltage from the house lighting circuit for any radio receiving set of 12 tubes or less.
It will supply the plate voltage necessary for a power unit or power tube. Its maximum output is 50 milliamperes at 180 volts.
We use the Raytheon Tube in the Valley B Power Unit because only the Raytheon Tube gives full wave rectification and has no filament to burn out. Also, it is the only rectifying tube for this service which will deliver full current and voltage continuously over a long period of time.
Operates without hum or noise — as silent as dry batteries. Mounted in handsome black grained metal case. Comes complete with Raytheon Tube, cord and plug.
*
Radio Division
VALLEY ELECTRIC CO., St. Louis, Mo.
District Offices: Boston, Chicago, Cleveland, Indianapolis, Kansas City, Minneapolis, New York, Philadelphia, San Francisco
Manufacturers of B Power Units— Radio Receiving Sets — Vibrator Type Chargers — Twin Bulb Type Chargers
Valley Electric
•jf Examined and approved by Radio Broadcast