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RADIO BROADCAST ADVERTISER
143
Until you have heard the NEW VICTOREEN
"A.C." or "B.C."
You cannot realize the marvelous development in Radio Reception
The new Victoreen is simply wonderful— that is the only way to describe it. It has wonderful tone — wonderful selectivity, wonderful sensitivity. It is wonderfully simple to assemble, wonderfully easy to operate. Anyone who has the slightest "knack" can assemble in a few pleasant hours a set which, from every standpoint, simply cannot be surpassed.
This is a season of wonderful radio programs. With a Victoreen you can enjoy them from coast to coast. If a Victoreen can't get a station it can't be had.
Victoreen R. F. Transformers have been greatly improved — the circuit has been still further developed — many other radical improvements have been made which make Victoreen more than ever, the world's standard "Super."
Write for complete Victoreen story and the FREE Blue Print giving constructional data and full directions. You'll have a set that you can boast about, when you have a Victoreen.
The Blue Print is FREE
Victoreen Power Amplifier and "B" Supply makes any good set better
Supplies 45, 90, 180, and 450 volts, using a UX210 or 250 in the last stage. Contains two voltage regulator tubes so that the 90 and 180 volt taps are supplied with a constant volt potential. It is the last word in "B" Supply. For the most satisfactory results you MUST have it.
FREE BLUE PRINT with list of parts and complete assembly instructions, will be sent upon request.
The Geo. W. Walker Company
^Merchandisers ofUictoreen 'Radio Products 2825 Chester Ave., Cleveland, Ohio
YicJtmeen
Push-Pull
Power Stage for Dynamic Speakers
For best results, every dynamic type speaker should be preceded by a push-pull amplifier. This is particularly true because they reproduce frequencies as low as 30 cycles and the attendant hum fromraw AC on the filaments of power tubes is greatly pronounced unless filtered out by a push-pull amplifier.
The AmerTran completely wired pushpull power stage has been specially designed for dynamic speakers. Consists of type 151 input and output transformers (2.00 for working out of 2.10 type tubes or type 362. for 17 1 type tubes). Both the 2.00 and the 3 62. have the secondary designed for connecting directly to the moving coil of the speakers. Completely wired with sockets and resistances. Also available for cone type speakers and for both 2.10 and 171 tubes.
Licensed under patents owned or controlled by RCA and may be bought with tubes.
Price complete (without tubes) $36.00
(slightly higher west of Rocky Mountains) Write us for hook-up of this remarkable instrument.
AMERICAN TRANSFORMER CO.
JSI
Transformer Builders for more than 28 years M 287 Emmet Street Newark, N. J.