Radio today (Apr-Dec 1939)
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HewTMitqs
5000 -volt multiplier
k Unit for converting Weston 772 multi-range meter for use at potentials up to 5000 volts at 20,000 ohms per volt. Multiplier unit mounts in compartment of tester — total resistance of 100 megohms in circuit. Supplied with test leads insulated to withstand 11,000 volts in accordance with AIIE safety standards. Televerter available from Weston Elec. Instrument Corp., Newark, N. J. — Radio Today.
Rack and panel Chanalyst
k Rider Chanalyst in steel rack and panel assembly, black rippled finish, size 19 x 12 inches. Furnished complete with connecting accessories, $122.50 list. Rack and panel assembly alone $15.00. Service Instruments, Inc., 404 Fourth Ave., New York, N. Y. — Radio Today.
Quietone filter unit
k All wave filter for use on 110 volts AC or DC, 5 amp. maximum capacity. Replaces old CD type IF-1. May be used to eliminate interference carried by power line. Equipped with metal case and binding post for ground connection. Catalog
165A on request. Cornell-Dubilier Electric Corp., S. Plainfield, N. J — Radio Today.
Ferrule terminal resistors
• Ferrule clip terminal-type reisistors now available in wirewound power resistor line. Inorganic cement-coated. Use spring clips like cartridge-fuse blocks. 10200 watts rating, all standard values. Clarostat Mfg. Co., Inc., 285 N. 6th St., Brooklyn, N. Y.— Radio Today.
Poly-pedance transformers
k Line of matching transformers include 2-line to grid transformers and six modulation 15-600 watt transformers. All units tapped for wide-range impedance. Excellent frequency response. Described in catalog 160. Standard Transformer Corp., 1500 N. Halsted St., Chicago. —Radio Today.
Television antenna system
•k Andrea teleceptor features climate-sealed coupler with attached antenna rods to form legs of a y4 wave doublet and 75 ft. rubber jacketed transmission line with matched impedance to doublet and antenna circuit of tele-receiver. Unit comes complete. Measures 8% ft. high with spread of 10 ft. when assembled. Instructions included. Andrea Radio Corp., 48-02 48th Ave., Woodside, L. I., N. Y — Radio Today.
Signal generator
k Features of Triumph signal generator include: 2 calibrated scales for all six bands, ten to one vernier. 100 K.C. to 96 M.C., expanded scales 350° rotation, straight line freq., 400 cycle modulation, variable from 0 to 75 per
cent. May be modulated externally. 400 cycle audio 0 to 2.5 volts. R.F. output from 0 to approx. yA volt. Removable output plug. Singleended tubes. Model 130, net price $29.95. Triumph Mfg. Co., 4017 W. Lake St., Chicago.— Radio Today.
Television tube
■k Stubby 5-inch cathode-ray television tube for adaptation to small cabinets. Electrostatic deflection is utilized, images reproduced in black and white. Videotron is 13-inches long (3% inches shorter than usual), lined with aquadag coating to prevent reflection and assure clean-cut picture tones. No. 1805P4. National Union Radio Corp., Newark, N. J. — Radio Today.
No.7817
Electric shaver-filter
k Filter consisting of two duolateral wound chokes of 3MH inductance and condenser of .03 mfd. Circuit provides exceptionally-high degree of attenuation and eliminates need for ground connection. Moulded rubber enclosure makes filter unbreakable and prevents shock to user. J. W. Miller Co., 5917 S. Main St., Los Angeles, Cal. — Radio Today.
Television tube fluorescent material
•k Silicates and tungstates in all colors available for immediate delivery. For details contact Callite Prod. Div. of Eisler Elec. Corp., 544-39th St., Union City, N. J. — Radio Today.
P.A. tuner kit
k T.R.F. broadcast tuner covering 540 to 1,700 kc. Self-contained including AC-DC power supply. Triple-point tone control. Completely assembled but not wired, $35.00 list. Edw. L. Guthman & Co., Inc., 400 S. Peoria St., Chicago. — Radio Today.
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RADIO TODAY