Radio today (Jan-Mar 1939)

SIGMA INSTRUMENTS, INC., 388 Trapelo Rd.. Belmont, Mass., "Sigma" — R SIGMA — Sigma Instruments, Inc. SPENCER THERMOSTAT CO., Attleboro, Mass.— Thermal switches STAN CO — Standard Electrical Products Co. STANDARD ELECTRICAL PRODUCTS CO., 317 Sibley St., St. Paul, Minn., "Stanco" — R STROMBERG CARLSON TELEPHONE MFG. CO., Rochester, N. Y.— R STRUTHERS DUNN, INC., 139 No. Juniper St, Philadelphia, Pa.— R, TE SUPREME ELEC. PRODUCTS CO., Rochester, N. Y. — R SWEDISH IRON & STEEL CO., 17 Battery Place, New York, N. Y. — CB, R, M TECH LABORATORIES, 7 Lincoln St., Jersey City. N. J., "Tech Lab"— TS, WT TOBE MU-SWITCH— Tobe Deutschmann Corp. TORK CLOCK CO., INC., 31 South St., Mt. Vernon, N. Y., "Tymit" — TE TRIPLETT ELECTRICAL INSTRUMENT CORP., 122 Main St., BUiffton, Ohio, "Triplett"— R, TS TRIUMPH MFG. CO., 4017 W. Lake St., Chicago. Bl.— R, WT TYMIT— Tork Clork Co., Inc. UNITED ELECTRONIC INDUSTRIES, 43-47 35th St.. Long Island City, N. Y— R UTAH RADIO PRODUCTS CO., 820 Orleans St.. Chicago, 111., "Utah"— R WARD LEONARD ELECTRIC CO., 31 South St., Mt. Vernon, N. Y., "Ward Leonard" — R WESTERN ELECTRIC CO., 195 Broadway, New York, N. Y.— R, V WESTINGHOUSE ELEC. & MFG. CO., 95 Orange St.. Newark, N. J. — R WESTON ELECTRICAL INSTRUMENT CORP., 614 Prelinghuysen Ave., Newark, N. J., "Weston" — R, TS WESTON — Weston Electrical Instrument Corp. WHEELCO INSTRUMENTS CO., 1929 S. Halstead St., Chicago, III.— R WIRT CO., 5221 Greene St., Philadelphia, Pa.— P, W YAXLEY— P. R. MaUory & Co., Inc. ZENITH ELECTRIC CO., 527 S. Dearborn St.. Chi eago. 111.— R, TE •■*fc*3r BEST BUSINESS IN YEARS SELLING LAFAYETTE P.A. TRANSFORMERS & CHOKES 1AFAYETTE ±p. a. saCcs division A NEW YORK • ATLANTA CHICAGO Amateur transmitting AT Audio (receiving) A Auto transformers AU Chokes (receiving) C Coils & windings CW Commercial & Broadcast trans. ■ • CT Power (receiving) P Voltage regulating VR ACME ELECTRIC & MFG. CO., Cuba, N. Y., "Acme" —A, AU, C, P, VR ACME WIRE CO.. New Haven, Conn.— CW ADJUST-A-VOLT— Standard Electrical Products Co. ALDEN PRODUCTS CO., 715 Center St., Brockton, Mass.— C, CW AMERICAN TRANSFORMER CO., 180 Emmet St., Newark. N. J.. "Amertran"— A, AT, AU, C, CT, P AMERTRAN — American Transformer Co. ARLAVOX MFG, CO., 430 S. Green St., Chicago, HI. —A, C, P CHICAGO TRANSFORMER CORP., 3501 West Addison St., North Center Station, Chicago, HI., "Chi tran"— A, C, P CHITRAN — Chicago Transformer Corp. COLLINS RADIO CO., 2920 First Ave., Cedar Rapids, Iowa— AT, A, AU, C, CT C0T0-C0IL CO., INC., 229 Chapman St., Providence, R. I.— CW DONGAN ELECTRIC MFG. CO., 2987-3001 Franklin St., Detroit. Mich.— A. C, P ECCO HIGH FREQUENCY CORP., 120 W. 20th St.. New York, N. Y.— CT FERRANTI ELECTRIC. INC.. 30 Rockefeller Plaza, New York, N. Y., "Ferranti"— AT, A, AU, C, CT, P. VR FREED TRANSFORMER CO.. 72 Spring St., New York, N. Y— AT, A. AU, C, CW. CT, P, VR GENERAL RADIO CO., 30 State St, Cambridge, Mass., "G-R." "Variac" — A, AU G-R — General Radio Co. GENERAL TRANSFORMER CORP.. Buren St., Chicago, HI.. AU, C, P, VR GENERAL WINDING CO.. York, N. Y., "Gen-Win" P, VR GEN-WIN— General Winding Co. HALLDORSON COMPANY. INC., 4500 Ravenswood Ave., Chicago, HI.. "Halldorson Vacuum-Sealed"— AT, A, AU, C, CW. P. VR HYGRADE SYLVANIA CORP., Clifton, N. J.— C, T INSULINE CORP. OF AMERICA. 25 Park PL, New York. N. Y.— AT INTERNATIONAL TRANSFORMER CO.. 39 W. 20th St., New York. N. Y.. "International" — A, AU, C, CW, CT, P, VR JEFFERSON ELECTRIC CO., Bellwood, m.— AT. A. AU, C, P KELLOGG SWITCHBOARD & SUPPLY CO., 6650 So. Cicero Ave., Chicago. HI.. "Kellogg"— A. C. CW KENYON TRANSFORMER CO., INC.. 840 Barry St., New York, N. Y.. "Kenyon"— A, AT, C, CT. P MAGNETIC WINDINGS CO.. 16th & Butler Sts., Easton. Pa. — A, AU, C, CW. P MEISSNER MFG. CO., Mt. Carmel, HI.— A, AU, C, CW MELOTONE COIL CO., 1774 Amsterdam Ave., New York. N. Y.. "Universal" — CW NATIONAL COMPANY. 61 Sherman St., Maiden. Mass., "National" — A, C, P NATIONAL MILL SUPPLY CO., 207 E. Columbia St.. Fort Wayne, Ind. — A. C, P NEWARK TRANSFORMER CO., 17 Frelinghuysen Ave., Newark, N. J. — AT, AU, CT NORDENDALE MFG. CO., 2100 Fulton St., Chicago, ni.— A, C PEERLESS CABINET CO., 3750 S. Grand Ave., Los Angeles, Calif., "Peerless"— C, T PHILCO RADIO & TELEVISION CORP., Tioga & C Sts., Philadelphia, Pa., "Philco" — A, C, P RADIO RECEPTOR CO., INC., 251 W. 19th St., New York, N. Y. — CW, AT, A, C, CT, P RAYTHEON MFG. CO., 190 Willow St., Waltham. Mass., "Raytheon" — AT, A, AU, CT, VR RCA MFG. CO., Front & Cooper Sts., Camden, N. J., "RCA"— A, AT. C, CT, P ROBERTSON-DAVIS CO., INC., 311 N. Desplaines St., Chicago, HI. 1250 W. Van 'Streamliner" — AT, A, 254 W. 31st St.. New -AT. A. AU. C. CW, CT. RIDER'S VOLUME IX As usual Thordarson is first and original in compiling this complete and reliable data on replacement transformers for the receivers listed in Rider's Volume IX. The correct choke, audio and output as well as power transformers are indicated for all types of receivers listed by Rider — whether AC, AC-DC or battery models. ASK VOIR DISTRIRUTO FOR So. 213-D Free supplement to No. 243 and 243-S for Rider's Volumes I to VIII inclusive. Thordarson Replacement Transformer Encyclopedias now cover receivers listed in all of Rider's Manuals — approximately 8,000 radios — ranging from the earliest models of about 1920 up to present day 1938-1939 sets. Ask your distributor for your FREE copy or fili in the coupon below and send it to the factory today ! OTHER IMPORTANT THORDARSON CATALOGS Ai\D GUIDES AMPLIFIER CATALOG, Ns. 400 — FREE Illustrates ten models from 8 to 75 watts output. RADIO SERVICE GUIDE, No. 342— 15c postpaid 32 pages of useful charts, tables and shortcuts. SOUND AMPLIFIER GUIDE, No. 346— 15c postpaid Circuit diagrams, templates and parts lists for amplifiers up to 120 wans output. TRANSMITTER GUIDE, No. 144 — 15c postpaid Circuit diagrams, details and parts lists for beginners' to 1 KW rigs. TRANSFORMER MANUAL, No. 340 — 50c postpaid Three guides above plus encyclopedia, catalogs, etc., combined in one loose-leaf cover. SEE YOUR PARTS DISTRIBUTOR OR WRITE FACTORY NOW! THORDARSON ELECTRIC MFG. CO. see W. HURON ST., CHICAGO, ILL. 1PemG.ndL J^ourex Itu /kotaaxion MARCH, 7939 75