Radio and Television Today (Jan-Dec 1940)

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QUIPMENT Triplett oscillator if Model 1632 wide-range signal generator has heterodyne detector incorporated, coaxial output lead, 100 kc. to 120 mc, output voltage meter, internal or external modulation. Net, $79.85. Triplett Electrical Inst. Co., Bluffton, Ohio. — Radio Today. Advance relay • Midget relay for AC or DC operation will handle 200 watts non-inductive AC loads. Available in DP-ST or DP-DT contacts. Operation from as little as 0.1 watts. Advance Electric Co., 1260 W. 2nd St., Los Angeles, Calif. — Radio Today. RTL circuit tester • Model 300 multi-tester has 7inch meter with DC voltages to 1,200 at 5,000 ohms per volt. AC/DC volts to 6,000, Current to 30 amps, ohms to 10 megs. V.T.V.M. ranges of 10 and 20 volts. DB and VU ranges. List, $44.50. Radiotechnic Lab., 1328 Sherman Ave., Evanston, 111. — Radio Today. Eby photo alarms if Complete line of photo electric units for use as alarms, etc. Eight models from "beginner's" to "heavy duty" operate from 110 volts 50-60 cycles. Hugh H. Eby, Inc., 4700 Stenton Ave., Philadelphia. — Radio Today. >terovox electrolytics -k Independent section midget electrolytics measured 1 x 2y2 for 450 v. 8-8 and 250 v. 16-16 mfd. Type PRS 150 for 20-20 mfd. is only 1 x 2%. Entirely independent sections permit circuit flexibility. Aerovox Corp., New Bedford, Mass. — Radio Today. IRC wire wound units * Complete line of non-inductive resistors from 10 to 200 watts power uses special type winding eliminating high capacity and potentials between adjacent turns. International Resistance Co., 401 N. Broad St., Philadelphia.— Radio Today. DID you ever stop to wonder how some servicemen get more business and make more money than you? Here, perhaps, is the answer. The most successful men in any business are those who have learned never to pass up anything that will help them to accomplish an important job in less time. This practice of taking advantage of every aid to better work in less time is often the only thing that stands between success and failure. In the radio service business, the man who uses all the information he can get to make trouble-shooting quicker and surer is the one who forges ahead. He's the man who has always had a complete set of RIDER MANUALS. He knows how foolish it is to depend on his own memory or intuition when complete, authoritative data can be at his fingertips for only 3c a day. RIDER MANUALS give you, in the most convenient form, complete data on every set you may be called upon to service . . . data on alignment, I-F WHAT HAS HE GOT THAT I HAVEN'T GOT? peaks, operating voltages, parts lists and values, voltage ratings of condensers, wattage ratings of resistors, coil resistance data, etc. If you don't have a complete set of eleven RIDER MANUALS, you are overlooking one of the surest ways of speeding up your trouble shooting and increasing your profits. YOU NEED ALL ELEVEN RIDER MANUALS Volume Price Covering Up to Volume Price Covering XI $10.00 May 15, 1940 VI $7.50 1935-36 X 10.00 1939-40 V 7.50 1934-35 IX 10.00 1938-39 IV 7.50 1933-34 VIII 10.00 1937-38 III 7.50 1932-33 VII 10.00 1936-37 II 7.50 1931-32 I 7.50 1920-31 JOHN F. RIDER, PUBLISHER, INC. 404 Fourth Avenue New York City Export Division: Rocke-lnternational Elec. Corp., 100 Varick St., N. Y. C. Cable: ARLAB VOLUME XI HAS MANY NEW FEATURES Includes data on FM receivers released up to press time. New Index . . . cross-indexed for easy reference. New "How It Works*' section, with up-to-date information on the latest developments. New Vest Pocket Supplement contains much useful information for on-the-spot reference. 1^72? NEED RIDER MANUALS AUGUST. 7940 43