Diff: RCA

Differences between version 17 and previous revision of RCA.

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version 17

RCA

Company History

• David Sarnoff Library The David Sarnoff Library documents David Sarnoff's life; the history of radio, television, electronics, and communications; and the history of the Radio Corporation of America (RCA).

Manuals, Catalogs, etc.

• Antennalyzer analysis of directional arrays using analog techniques

*RCA Broadcast Transmitters - Provides support and manuals for RCA transmitters.

• Ampliphase For Economical Super Power AM Transmitters describes the theory of RCA Ampliphase modulation
• Broadcast News Number 1, October 1931. Includes articles on KFI, Los Angeles, Microphone Placement, Coverage Measurements using a new field strength meter, and a description of a police radio system. Original courtesy of Tom Friedman. 8.756M. An extensive collection of RCA Broadcast News is at American Radio History
• Principles of Operation of the Ampliphase Transmitter
• RCA Picture Tubes - Characteristics and replacement directory. 1955
• RCA Power Tubes catalog PG-101F, 1963

*1937 Transmitting Tube Handbook

*Part 1 - General info. Contributed by Tim Hughes. 3.3MB *Part 2 - types 10 through 804. Contributed by Tim Hughes. 18MB *Part 3 - types 805 through 849. Contributed by Tim Hughes. 19.1MB *Part 4 - types 850 through 871. Contributed by Tim Hughes. 17.8MB. *Part 5 - types 872 through 1652. Contributed by Tim Hughes. 12MB.

• 1939 Broadcast Equipment Catalog
• 40-C - The 40C Program Amplifier was RCA's first AC powered Program Amplifier. It seems to date from 1933-4. A contemporary of the 44A Velocity Microphone & 41B Pre-Amplifier. Scanned and contributed by Timothy Hughes. 2.9MB
• 41-B Microhpone Preamplifier (1935). Designed as a companion to the 44A microphone. Approximately 150 of an earlier version installed in NBC's Radio City. Scanned and contributed by Timothy Hughes. 2.4MB. 1.5MB.
• 44-A Velocity Microphone. 1933. Scanned and contributed by Tim Wright. 50MB.

*76-B5 Audio Console photo

• Radiotron and Broadcast Station List from 1929. From http://www.coutant.org/radiotron . 9.2MB
• RCA Receiving-Type Tubes for Industry and Communications. Catalog RIT-104. 1955. 9MB
• RCA 55A - 55A Line Amplifier is physically and electrically similar to the 40C, but seems to be somewhat rarer. Scanned and contributed by Timothy Hughes. 2.8MB
• RCA 56-E dual telephone line equalizer. 2 equalisers as a rack mounting unit. Listed in RCA 1950 Broadcast Equipment catalogue, p80. MI-4162 Black $32.50 US 1950, MI-4162-A Umber Gray, $40 US 1950. Scanned and contributed by Timothy Hughes.
• RCA 58-A Tri-Amplifier (MI-4151). 3 input microphone mixer. 1936. Scanned and contributed by Tim Hughes. 5.7MB
• RCA 69-C Noise and Distortion Meter schematic. From Broadcast Operator's Handbook by Harold E. Ennes. John F. Rider Publisher, Inc. 1951. Contributed by Tim Hughes. 511kB. - File corrupted! Anyone have a replacement? HH
• RCA 70-B transcription turntable. Approx. 1938-1939. Scanned and contributed by Timothy Hughes. 4MB
• RCA 70-C2 Transcription Turntable illustration. The 70-C2 is a transcription turntable for reproducting both lateral- and vertical-cut records. A high torque snchronous motor provides 78 and 33 1/3 rpm turntable speeds. The pickup head is of the moving-conductor type with a diamond point stylus. The pickup and filter reporoduce various types of records with a response characteristic considered an ideal playback response. From Broadcast Operator's Handbook by Harold E. Ennes. John F. Rider Publisher, Inc. 1951. Contributed by Tim Hughes. 1.5MB.
• RCA 70-D transcription turntable. More info at http://www.coutant.org/rca70d/index.html
• RCA 76-B2 Consolette. Scanned by Lane Lindstrom. 3MB.

*RCA 76-C Console

• Photo
• RCA 82-A Monitoring Amplifier. This model appears to be the genesis for a range of Photophone and PA amplifiers. Scanned and contributed by Timothy Hughes. 3MB
• RCA 83-C Isolation Amplifier. The Type 83-C isolation amplifier has been designed especially for broadcast speech input installations as a line bridging amplifier, but it can also be used as a monitoring amplifier where large outputs are not required. Scanned and contributed by Timothy Hughes. 2.1MB
• RCA 85-B1 Microphone Preamplifier. Scanned and contributed by Timothy Hughes. 1.8MB
• RCA 86-A1 Limiting Amplifier schematic From Broadcast Operator's Handbook by Harold E. Ennes. John F. Rider Publisher, Inc. 1947. Contributed by Tim Hughes. 245kB.
• RCA 94-C amplifier. Industrial design by John Vassos. Response tailored to complement Harry F. Olson's UZ-4209 dual voice coil speaker and 64-A Monitoring Speaker. The peak of RCA amplifier design before the 6L6 with feedback displaced triode output stages. Scanned and contributed by Timothy Hughes. 2.3MB
• BA-1A two stage preamp. Scanned and contributed by Tim Wright.
• BA-4C monitoring and recording amplifier. Scanned and contributed by Tim Wright. 24.6MB

*BA-23A Program Amplifier. Reported to be first produced in late 1954. Listed in RCA Broadcast Audio Equipment for AM FM Television, 3rd (1957), 4th (1959) and 5th (1963) editions. $204.75 US 1963. Contributed by Timothy Hughes. 9.2MB *BC-3C Standard Consolette. Contributed and scanned by Lane Lindstrom. File size: 3.7MB. Another Copy, another copy

• BC-7A Stereo / Dual-Channel Consolette. Contributed and scanned by Lane Lindstrom. File size 3.8MB
• BN-2A portable remote amplifier. Scanned and contributed by Tim Wright. 25.2MB
• BTA-1N1 1kW AM transmitter, product brochure. Uses 3CX3000F1 operating as a class AB1 linear RF final amplifier. Scanned by John T. M. Lyles.
• BTA-1L 1kW AM transmitter. Contributed by Scott Todd. 1946. 14M
• BTA-1R Reduced Size (32.1MB), scanned and contributed by Mike McCarthy
• BTA-1R Full Size (189MB), scanned and contributed by Mike McCarthy
• BTA-1R1 1kW AM transmitter. Scanned by Stanley Adams
• BTA-1R3 Reduced Size, scanned and contributed by Mike McCarthy
• BTA-1R3 Full Size (240MB), scanned and contributed by Mike McCarthy
• BTA-1S1 1kW AM transmitter, product brochure. Scanned by John Lyles.
• BTA-10F 5 or 10 kW AM transmitter, manual. Shared by Scott Todd and scanned by Stanley Adams.
• BTA-50H 50kW Ampliphase Transmitter product introduction
• BTA-250L Broadcast Transmitter is a complete, self-contained unit that will provide reliable, high-fidelity operation at any frequency within the range of 540 and 1600 kc. Excellent frequency stability is attained by the use of a crystal contained in a temperature-controlled chamber in the oscillator circuit. No greater deviation than +/- 10 cycles from the assigned operating frequency is pemitted. Contribued by Scott Todd. 29M
• BTA-250M Broadcast Transmitter is a complete, self-contained unit that provides a power output of 250 watts at any frequency in the 535 to 1620 kilocycle range. Mounted in a single RCA Type BR-84 steel cabinet, the unit utilizes a temperature-controlled crystal for close regulation of the operating frequency. Contributed by Scott Todd. 8.6M

*BTE-10C FM Broadcast Exciter and BTE-10C FM Broadcast Transmitter. Contributed by Scott Todd. 5M

• BTE15A less schematics]. Scanned and submitted by Michael Dinger 12M

*FTF-1D 1kW FM transmitter. Article from March 1960 issue of RCA Broadcast News describing this new transmitter.

• BTF3B FM Broadcast exciter and transmitter, very popular unit with Reactance tube modulation and tuning motor to control the AFC of division stages. "Iron Fire Man" Exciter. Manual by Dave Hultsman and scanned by Stanley Adams. This short description if of the exciter, from our friend Don Wilson. RCA-MI7106 Exciter

*BTF-10C - Article from March 1960 issue of RCA Broadcast News describing this transmitter.

• BTF-10D 10kW FM Broadcast Transmitter. About 1962. 36M
• BTP-1A Broadcast Transmitter schematic. From Broadcast Operator's Handbook by Harold E. Ennes. John F. Rider Publisher, Inc. 1951. Contributed by Tim Hughes. 147kB.
• BTS-1A Stereo Subcarrier Generator. Contributed by Scott Todd. 4M

• BW-66F AM modulation monitor. Scanned and contributed by Alan Kline. 24M

  • Photo of outside
  • Photo of inside
• OP-6A Portable Amplifier. MI-11202/A. 250 ohm input, 1620 input stage with variable feed-back as part of the gain control, 2 stage 1620 main amplifier with output anode to input cathode feedback. Output jumperable between 150 and 600 ohms. VU meter, 6X5GT/G rectifier. Provision for battery Supply. Schematic (370k) from The Radio Manual, Sterling & Munro. 4th edition 1950. Contributed by Tim Hughes.
• OP-7 Portable Mixer. MI-11213. Used with OP-6 amplifier. 4 x 30/250 ohm mic inputs, 1620 pre-amps triode connected, 250 ohm low level output. 6X5GT/G rectifier. Provision for battery Supply using MI-11214 Battery Box. Schematic from The Radio Manual, Sterling & Munro. 4th edition 1950. Contributed by Tim Hughes.

*TM-10A Color Video Monitor

*Article from Jan/Feb 1954 issue of RCA Broadcast News discussing this monitor.

• TMV-75B Field Strength Meter (500 kHz to 20 MHz). Includes certificate of calibration from National Bureau of Standards dated March 21, 1941. Includes a schematic of modifications for driving a chart recorder dated April 3, 1936. Contributed and scanned by Willis (Bill) Frahm, bill.frahm@citcomm.com.

• WX-2A Field Strength Meter. Scanned by Dale H. Cook. 25.5MB

  • Schematic

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