Radio today (Jan-Mar 1939)

*+ ** 7k* *<* RIDER CHANALYST Wl Itk RACK and PANEL ASSEMBLY x >*"■ -© © l»'lSl Brings All the Leads Out in Front — Adding Still Further to Time Saved by Chanalyst. SERVICEMEN Continue to Praise "I find the Chanalyst indispensable. Every time I use it, it seems to become more valuable." — A. Coppotelli, A. C. Radio Service. Chicago Heights. "Your Chanalyst advertisements express my sentiments exactly. I find the instrument indispensable in my work, and use it constantly." — I. Rosenberg. Custom Radio & Elec. Lab.. New York City. "Wouldn't be without the Chanalyst —INDISPENSABLE!"— Carr & Pheil. Chambersburg. Pa. "A terrific weapon against those 'hard to isolate' troubles." — Bruce N. Carpenter. New Castle. Del. "Going through a set with the Chanalyst is almost instantaneous. With . . . (another instrument I have) I took all day and was angry before I was through." — Lester I. Berry, Newark, Ohio. "I am very pleased with my Chanalyst. It has helped me find the trouble in several tough jobs already and I am learning new uses for it every day." — Carl J. Anderson, Marietta, Ohio. The rack and panel is sold separately at $15. The price of the Chanalyst complete with rack and panel is $122.50 ■ (without, $107.50) ON l0?»n|0M" plRf0W^<* The RIDEH Chanalyst SERVICE INSTRUMENTS, INC. 404 Fourth Avenue, New York City Foreign Division— 147 W. 45th Street, N. Y., Cables — -"Servian" LABORATORY & PRODUCTION TEST EQWPMENT-Cont'd FANSTEEL METALLURGICAL CORP., 46 W. 22nd St., No. Chicago, HI.— C FERRIS INSTRUMENT CORP., Boonton Ave., Boonton, N. J., "Ferris"— F, FM, FS, I, MV, SR GENERAL ELECTRIC CO., Lynn, Mass— M GENERAL ENGINEERS, 2241 Garrett Rd., Upper Darby, Pa., "General Engineers" — F, FM, FS GENERAL RADIO CO., 30 State St., Cambridge, Mass., "G-R"— B, C, FM, FS, L, M, MV, R, SL, SA, SR, VT, WA G-R — General Radio Co. HARDWICK & HINDLE, INC., 40 Herman St., Newark, N. J.— R HICK0K ELECTRICAL INSTRUMENT CO., 10514 Du pont Ave., Cleveland, Ohio, "Excel," "Hickok"— F, FM, M, 0, SL, SA, SR, VT INTERNATIONAL RESISTANCE CO., 401 N. Broad St., Philadelphia, Pa. — R LAMPKIN LABS., Bradenton, Fla — FM LEEDS & NORTH RUP CO., 4970 Stenton Ave., Philadelphia, Pa.— B. F. R MARINE RADIO CORP., 91 Third Ave., New York, N. Y., "Marine"— 0 MECK — Electronic Design Corp. MONARCH MFG. CO., 3341 Belmont Ave., Chicago, 111., "Monarch"— B, M, MV, SR, VT MUTER CO., 1255 S. Michigan Ave., Chicago, 111., "Muter"— B, R PHONOMETER — Acoustic Consultants, Inc. POTTER C0NDENS0R CO., 1950 Sheridan Rd., North Chicago, 111.— C PREMIER CRYSTAL LABS., INC., 55 Park Row, New York, N. Y.— FM, FS QX CHECKER— Boonton Radio Corp. Q METER — Boonton Radio Corp. RCA MFG. CO., Front & Cooper Sts., Camden, N. J., "RCA"— B. C, F, FM, FS, M, MV, 0. R. SL, SA, SR, VT, WA SERVICE INSTRUMENTS, INC., 406 4th Ave., New York, N. Y.— M, VT SHALLCR0SS MFG. CO., 10 Jackson Ave., Colling dale. Pa., "Shallcross" — B, M, R SUPREME INSTRUMENTS CORP.. 414 Howard St., Greenwood, Miss., "Supreme" — B, 0 TECH LABORATORIES. 7 Lincoln St., Jersey City, N. J., "Tech Lab"— B, R, SL TELEVIS0 CO., 341 N. Pulaski Rd., Chicago, 111.— FM, SA, VT TO BE — Tobe Deutschmann Corp. TRIPLETT ELECTRICAL INSTRUMENT CORP., 122 Main St., Bluffton. Ohio, "Tripletf— 0, M TRIUMPH MFG. CO.. 4017 W. Lake St.. Chicago, 111.— MV. 0, SR UNITED CINEPHONE CORP., 43-37 33rd St., Long Island City, N. Y., "United Cinephone Research Labs."— SL UNITED MOTORS SERVICE, W. 3044 Grand Blvd., Detroit, Mich., "United Motors" — 0 WESTINGHOUSE ELECTRIC CO., Orange St., Newark, N. J.— M WESTON ELECTRICAL INSTRUMENT CORP., 614 Frelinghuysen Ave., Newark, N. J. — SL, M, VT WRIGHT'S ELEC. INST. LAB., Reed College. Portland, Ore.— M ELECTRONIC AND AMPLIFIED MUSICAL INSTRUMENTS Bells and chimes BC Organs O Pianos P String instruments S Tuning devices T ALOHA MUSICAL INSTRUMENT* PUBLISHING CO., 7947 S. Halsted St., Chicago, 111.— S ANSLEY RADIO CORP.. 240 West 23rd St., New York, N. Y.— P C. G. CONN, LTD., Elkhart, Ind. — T DAVITT & HAUSER MUSIC CO., 304 Main St., Cincinnati, Ohio — S ALLEN B. DUMONT LABORATORIES, INC., 2 Main Ave., Passaic, N. J. — T ELECTRO STRING INSTRUMENT CORP., Los Angeles, Calif.— S ELECTRONIC SOUND & MUSIC CO., 42 Third Ave., New York, N. Y.— S EPIPHONE, INC., 142 W. 14th St., New York, N. Y. — S EVERETT PIANO CO., South Haven, Mich.— 0 FRETTED INSTRUMENT MFRS., INC., 87 Ferry St., Jersey City, N. J. — S VO LT METER OHMMETER WITH EXTREMELY tVicfe /<anqei Unlike anything heretofore available to the servicing industry, it fills a long-existing gap. THE VOLTMETER Measures from 0.05 to 5000 volts. Input resistance constant at 16 megohms on all ranges. "Contact potential" error eliminated. No readjustment of zero when changing ranges. Measures d-c operating and control voltages under dynamic conditions with r-f and a-f present — input capac. itance 1 mmf. Checks oscillator operation up to and including ultra-high frequencies. Will indicate plus or minus voltages without switching leads. THE OHMMETER Measures from 0.1 ohm to 1 billion ohms. Low voltage across resistance being checked — from 0.030 volt across 0.1 ohm to a maximum of 3 volts across 1000 megohms. Convenience of operation — one scale — one zero adjustment — does not require readjustment when range is changed. 7 overlapping ranges for maximum accuracy and ease of reading. Stable zero. Finest parts — high safety factors — protected againsthumidity. The RIDER SIMO f 0* MM) UttRtfURt VoltDhmyst SERVICE INSTRUMENTS, INC. 404 Fourth Avenue, New York City Foreign Division— 147 W. 45th Street, N. Y., Cables — "Servicin" 60 RADIO YEAR BOOK