Radio today (Jan-Mar 1939)

NEW THINGS Table-size radio • Model GF-500. 5-tube receiver with plastic cabinet available in six color combinations. AC-DC. Attached antenna. Covers standard and police broadcast bands. Has 4-inch permanent magnet dynamic speaker. General Electric, Bridgeport, Conn. — Radio Today. Radio-phonograph * Model 101, 5 tubes, crystal pick-up, self-starting motor, radiophonograph switch, tone control. Handles both 10 and 12 inch records. Hand-rubbed walnut cabinet. Philco Radio & Television Corp., Tioga & C Sts., Philadelphia, Pa.— Radio Today. Triumph tube checker •k Tube checker for all tubes including loktal and single-ended types with filament voltages from 1 to 35. Uses emission type principle following R.M.A. recommendations. Push-button selection of tube elements. Individual tests for shorted elements. Stabilized line-voltage adjustment. Roller-type index chart. Model 430LX — counter or portable —net $29.95. Triumph Mfg. Co., 4017 W. Lake St., Chicago, 111.— Radio Today. Cowl antenna * Telescope-type of brass and. chromium-plated steel. Fits in car between kick pad and side cowl. Extends 50 inches. Shielded housing prevents motor noise. Installed by drilling one hole on top and opening kick pad. Antenna is inserted inside the car. Philson Mfg. Co., 156 Chambers St., N. Y. City.— Radio Today. Push-button tuner * Two-deck oscillator and antenna condenser for six station buttons. Single-screw adjustment simplifies station tuning. May be used with permeability coil tuned or trimmer tuned oscillator circuits in three-circuit receivers. Greater stability, lower losses and minimum capacity. Model CX-52. Sprague Specialties Co., North Adams, Mass. — Radio Today. Parasitic Suppressor 1 Parasitic suppressor * Unit for suppressing ultrahigh-frequency parasitic oscillations in transmitters. A non-inductive vitreous-enameled resistor is combined with a choke. Measures 1% inches overall. Introduces negligible power loss at fundamental frequency. Type P300. Ohmite Mfg. Co., 4835 Flournoy St., Chicago, 111. — Radio Today. 6-volt power supply * A-B eliminator for batteryoperated sets which works from a 6-volt storage battery. Device supplies iy2 or 2-volts for filaments and B voltages of 45, 57, 90, 135, 180 at 40 milliamperes. Operates 7-tube set for 50 hours on one charge of a 130 ampere-hour battery. Fits into any radio that will accommodate 2 B batteries. Model J— list $19.95. Electro-Products Labs., 549 W. Randolph St., Chicago, 111.— Radio Today, I II Intensified cat-ray tube ■k Two metallic rings form an electrode that steps up the brilliance of the five-inch tube. Improved gun structure for better focus and modulating characteristics. Accelerating element cuts pattern size only 18 per cent, instead of 50 per cent when voltage is doubled. Allen B. Du Mont Labs., Inc., 2 Main Ave., Passaic, N. J. — Radio Today. Non-inductive resistors * Cement-coated power resistors, non-inductive up to 30 megacycles. 73,200, 400 and 600 ohms in 80-watt ratings for dummy antenna applications. Others from 10 to 80 watts. Clarostat Mfg. Co., Inc., 285 N. 6th St., Brooklyn, N. Y. — Radio Today. =.■, ■i§!l JW-—JSP-_ '/Til ._ I Morocco finished radio * 5-tube AC-DC superhet tuning 540-1,730 kc. Automatic volume control — full-vision dial with 5:1 vernier. Beam-power output tube. I.F. wavetrap. Miracle tone chamber— metal tubes. Embossed designs in ivory, red, brown morocco. Model CH-253— list $14.95. Emerson Radio & Phonograph Co., Ill Eighth Ave., New York, N. Y — Radio Today. Table combinations • Model 149 AT-CB. 5 tubes, automatic tuning with 5 buttons. Covers 540 to 18,100 kc. Louvretype speaker grille, self-starting AC one-speed phonograph motor. Crystal pick-up. Radio-phono motor switch. Lists at $44.95. Without push-button, 1-band, $39.95. Sentinel Radio Corp., 2222 Diversey Pkwy., Chicago. — Radio Today. 22 Radio Today