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. INDEX •
TO
ADVERTISEMENTS
Page
AEROVOX CORP 59
ALDEN PRODUCTS CO 52
AMERICAN MICROPHONE CO., INC 51
AMERICAN TELEVISION CORP 42
AMPERITE CO 44
APPROVED TECHNICAL APPARATUS 73
ASTATIC MICROPHONE LAB., INC 73
ATLAS SOUND CORP 50
BANK'S MFG. CO 49
BRUNO LABS., INC 72
BURKE AND JAMES, INC 74
CENTRALAB 68
CINAUDAGRAPH CORP 53
CLARION INSTITUTE OF SOUND
ENGINEERS 61
CLAROSTAT MFG. CO., INC 71
CONSOLIDATED WIRE & ASSOC. CORPS... 69
CORNELL-DUBILIER ELEC. CORP 75
CROSLEY CORP 6
ELECTRO-VOICE MFG. CO 70
EMERSON RADIO & PHONOGRAPH CORP... 3 FARNSWORTH TELEV. & RADIO CORP.. Cover 2
GARDINER METAL CO 60
GENERAL ELECTRIC CO 2, 3— part II
GENERAL INDUSTRIES CO 72
HALLDORSON CO 73
HYGRADE SYLVANIA CORP 2
INTERNATIONAL RESISTANCE CO 64
J. F. D. MFG. CO 70
KEN-RAD TUBE & LAMP CORP 67
LAFAYETTE RADIO CORP 76
LITTELFUSE, INC 50
MALLORY & CO., INC., P. R 1
MEISSNER MFG. CO 29
MIESSNER INVENTIONS, INC 69
NATIONAL RADIO INSTITUTE 57
NATIONAL TELEVISION CORP 33
NATIONAL UNION RADIO CORP 65
OHMITE MFG. CO 60
ONAN & SONS, D. W. ., 76
OPERADIO MFG. CO 51
PARMETAL PRODUCTS CORP 69
PHILCO RADIO & TELEV. CORP S, 25
PRECISION APPARATUS CORP 59
QUAM-NICHOLS CO Cover III
RADIART CORP 73
RADIO CORP. OF AMERICA 35
RADIO PARTS MFRS. NAT'L TRADE SHOW 48
RAYTHEON PRODUCTION CORP 5
RCA MFG. CO., TNC 36, 37, 38, 39, 40
READRITE METER WORKS 75
REGAL AMPLIFIER MFG. CORP 50
RIDER, JOHN F 63
SERVICE INSTRUMENTS, INC 55
SIMPSON ELEC. CO 67
SPRAGUE PRODUCTS CO 66
STAR MACHINE MFRS., INC 62
STROMBERG-CARLSON TELE. MFG. CO 4
SUNDT ENGINEERING CO 50
TELEVISION TRAINING CORP 65
THORDARSON ELEC. MFG. CO 54
TRIPLETT ELEC. INSTRUMENT CO 71
TUNG-SOL LAMP WORKS, INC 60
UTAH RADIO PRODUCTS CO 7
WARD PRODUCTS CORP 74
WESTERN ELECTRIC (GRAYBAR ELEC. CO.) 52 WESTINGHOUSE ELECTRIC SUPPLY CO... 15 WESTON ELECTRICAL INSTRUMENT CORP.
Cover IV ZENITH RADIO CORP 23
While every precaution is taken to insure accuracy, we cannot guarantee against the possibility of an occasional change or omission in the preparation of this index.
Hew Booklets
New circulars listing genemotors, converters and heavy duty power units for police short-wave radio. Carter Motor Co., 1608 Milwaukee Ave., Chicago.
Bulletin describing Radiocrafter dials. New England Radiocrafters, 1156 Commonwealth Ave., Brookline, Mass.
Catalog of Atlas sound products including new 360° speaker and stormproof Marine Midget speaker. Atlas Sound Corp., 1447-51 39th St., Brooklyn, N. Y.
14 page book describing Kenyon T line of transformers. Contains price revisions, circuit diagrams. Kenyon Transformer Co., 840 Barry St., New York, N. Y.
Instructive, newsy booklet titled, "A Community Credit Control Policy." One of Household Credit Library. Household Finance Corp., 919 N. Michigan Ave., Chicago.
Kohler Co., Kohler, Wis. — descriptive material on a new 800 watt, 110 volt AC electric plant. Also a bulletin on "Kohler Electric Plants for Every Need."
Technical description of Columbia High-Fidelity Recorder. Columbia Recorder Co., 745 7th Ave., New York, N. Y.
Precision Apparatus Co., 821 E. New York Ave., Brooklyn, N. Y. — owners of Precision electronometers models 500, 500A, 600 and 700 may obtain late tube charts, Form 7138, free, by writing this company.
Specs for ARC-6 automatic direction finder for aircraft. Lear Dev. Inc., Bldg. 31, Roosevelt Field, Mineola, L. I., N. Y.
Standard Transformer Corp., 1500 N. Halstead St., Chicago — eight pages of transmitting transformers, "the amateur transformer line built to broadcast specifications." Also a new booklet on the Stancor transmitter kit model 20P.
Free television lesson
National Radio Institute, 16th & U Sts. N.W., Washington, D. C, is offering a free sample television lesson, "Requirements of a Television Receiver" to Rapio Today's readers. Also available is a 64-page book telling about the N.R.I, radio & television courses.
New company in the recording field is Rek-O-Kut Corp., 254 Canal St., New York, N. Y. George Silber is advertising and sales manager; Walter Silber, president; and Victor Silber, chief engineer.
The company is manufacturing a recording attachment for use with phonographs and combinations. One unit takes records up to 12 inches in diameter. Another model handles records up to 16 inches.
FOR PROFITABLE SERVICING
U?'2" '."£• ■"•„" °^l
CORNELL-DUBILIER
\ELECTRIC corporation
New
Model
432
CHECKS ALL TYPES
RADIO RECEIVING TUBES
• Tests New 1.5, 35 and 50-volt Series,
Loctal Base Types, OZ4 and Other Gaseous Rectifiers.
• Separate Plate Tests on Diodes and Rectifiers.
• Neon Short and Leakage Tests.
• Ballast Tube Continuity Test.
• Uses Attractive Triplett Direct Reading Instrument, 3" Size. (GOOD-BAD) Scale.
• Line Voltage Adjustment.
• New Improved Low Loss Switch.
Model 431 $15.90
Checks all receiving tubes. (No ballast or gaseous rectifier test.) Tester uses dependable Readrite meter. Quartered-Oak case same as for Model 432.
. . . COMPLETE SHOWING . . . 1939-40 METERS & TESTERS BOOTH 920 — JUNE NATIONAL. RADIO PARTS TRADE SHOW
READRITE METER WORKS
419 College Drive, Bluffton. Ohio
□ Please send me complete information on new
Model 432.
Name
Address
City State
APRIL. 7939
75