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~~Z
. RADIO BROADCAST ADVERTISER.
PLUG in a Falck Claroceptor between wall socket and radio set and eliminate "static"' from motors, street cars, telephones and electrical appliances. This new improvement by a pioneer radio parts manufacturer grounds and thus blocks out line interference noise and radio frequency disturbances. Also improves selectivity and distance. Requires no changes in set. Measures just 3^2 x 5J4 x 2.y2 inches. Thousands now all over America use the Claroceptor for clearer A. C. reception. Get one right away — at radio parts dealers. Write for descriptive folder.
$7.50 complete with cord and plug
CLAROCEPTOR
Built h ADVANCE ELECTRIC CO.
1260 W. Second St. Los Angeles, Calif.
JOBBERS and DEALERS, GET OUR PROPOSITION
attention service men
A quality replacement audio transformer for the service man. Possesses the same high degree of performance which characterizes all Thordarson audio un i ts. Provides highest amplification consistent with quality reproduction. Unique Mounting Feature — The mounting bracket of this transformer is designed to fit all standard mountings without the necessity of drilling additional holes. May be mounted either on end or side or may be used as bracket to support sub-panel.
Remember: Thordarson radio transformers are Supreme in musical performance.
R-IOO List Price $2.25
THORDARSON ELECTRIC MFG. CO. Transformer Specialists Since 1895 Huron. Kingsbury & Larrabee Sts., Chicago
DAR
replacement audio transformer
T
s t d • • •
...tested,
tested again,
at every step in manufacturing
PRECISION in production methods keeps Arcturus quality at the peak. Every manufacturing process is checked by relentless tests, revealing every defect that might cause faulty performance.
"Go-and-No-Go" gauges, sensitive meters, high-powered microscopes and accurate chemical analysis replace all human guesswork in making Arcturus tubes —
insuring uniformity in materials and construction, uniformly fine performance throughout Arcturus' long life.
Critical engineers and set manufacturers approve the correct design and careful construction of Arcturus Blue Tubes. They know that A-C sets give the most satisfactory service, the best reception, with Arcturus Tubes in every socket.
[ Engineering Eacts Have a Utility Significance to the Broadcast Listener ]
ARCTURU
BLUE lofA-Vs TUBES
ARCTURUS RADIO TUBE COMPANY ~ Newark, N. J,
43E
ELECTRIC
TUBE BASE
BRANDERS
Impress Neat, Clean Letters into your Bases
Power Driven
HAND OPERATED THE LATEST AND BEST Machines for Marking Bases
Designed and Built by
GEORGE T. SCHMIDT, Inc.
4100 Ravens wood Ave.
Chicago, 111.
• june, 1929 . . . page 121 •