Radio today (Jan-Mar 1939)
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NEW THINGS
Univex cameras
* Two 8-mm home movie cameras Model C-8 features f:4.5 lens and built-in optical view finder. Equipped with sunshade — optional interchangeable lenses. List $15. The True-View model listing for $9.95 has permanently mounted brilliant view finder. Easier loading, uninterrupted operation. Powerful, quiet-running motor with governor. Universal Camera Corp., 46 W. 23rd St., New York, N. Y — Radio Today.
Philco batteries
* Complete line of dry batteries for every purpose. Units for flashlights, doorbells, lanterns, electric fences, radios. Special units for portable radios and mystery control. Standard, heavy, super-heavy duty types. Philco Radio & Television Corp., Tioga & C Sts., Philadelphia, Pa. — Radio Today.
Mica capacitors
* Transmitting-type mica condensers with very-low radio-frequency resistance and losses. Current range extended to include 30 megacycle band. Available in 17 capacities at voltages from 2,000 to 12,500. Cornell-Dublier Electric Corp., S. Plainfield, N. J.— Radio Today.
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Uni-directional mike
• Microphone for all installations requiring uni-directional characteristics. Increased sensistivity through use of alnico magnets. Frequency range of 40-10,000 cycles. Impedances of 50 and 250 ohms. Back cancellation of — 14 to — 20 DB. Output —61 DB. Model 77B— list $130. RCA Mfg. Co., Front & Cooper Sts., Camden, N. J. — Radio Today.
High-fidelity receiver
* High-fidelity radio receiver in kit form or completely wired. Tone quality and flexibility of assembly are featured. Speaker, tuner and audio system may be located at different points and remotely operated. Furnished with Cinaudagraph speaker. Pacent Engineering Corp., 79 Madison Ave., N. Y. City. — Radio Today.
Diversity coupler
* 3-tube unit. Selects strongest signal combination of two aerials through relay. Anti-fade benefits on short waves. Kit form, $16.80; wired, $19.95. Edwin I. Guthman & Co., Inc. — Radio Today.
I.F. transformers
* Iron-core double-tuned bandexpanding I.F. transformer. Moisture-proofed treatment of windings. Other types for all purposes available in both air and iron cores, permeability and condenser tuned. Consolidated Wire and Assoc. Corps., 516 S. Peoria St., Chicago, 111. — Radio Today.
4-inch speaker
• Electro-dynamic speaker for compact radios. May be used in interphones as combination mikespeaker. Unusually fine tone response. Available with or without output transformer. Model 45Y-4T. Operadio Mfg. Co., St. Charles, 111. — Radio Today.
Enclosed relay rack
* Type "C" deluxe single unit cabinet for studios, broadcast stations and installations for sound and radio equipment. Parmetal Products Corp., 3529 41st St., Long Island City, N. Y.— Radio Today.
High-range multi-meter
* Pocket-sized meter with ranges up to 3,000 volts. AC readings accurate with 5 per cent, DC within 2 per cent. Internal battery for ohmmeter. Completely cased in bakelite — test cables insulated for 5,000 volts. Weighs only 20 ounces. Hammeter. Simpson Electric Co., 5218 W. Kinzie St., Chicago, 111 — Radio Today.
U.H.F. transmitter
* Crystal-controlled ultra-high frequency transmitter for use in 141 megacycle aviation band. 10watt carrier rating. Crystal-controlled superhet receiver available for use with transmitter. Lear Developments, Inc., Roosevelt Field, Mineola, L. I., N. Y. — Radio Today.
Meter cases
• Housings for 2 and 3-inch meters. Cases formed of crackle-finished steel — ceramic feed-through insulators. Panels slope at 60° for easy meter readings. List $1.50. Bud Radio Co., 5205 Cedar Ave., Cleveland, Ohio— Radio Today.
Radio Today