|Newer page:||version 3||Last edited on December 9, 2018 12:46 pm||by harold|
|Older page:||version 2||Last edited on March 31, 2017 9:21 am||by harold||Revert|
Remote Control Timeline Moseley was a major supplier of transmitter remote controls. Here's a brief list of the ones I worked on.
- WRC-32 - I'm not sure of the model number on this one. It was vacuum tube based. It had a telephone dial to select channels and a stepper switch at the transmitter site. Control was done with tones. Step and reset were done by interrupting a single tone with the telephone dial. Metering was DC over the phone line.
- PBR-15 - This replaced the telephone dial with a set of push buttons and digital counters. Pushing a button resulted in a tone interruption (reset), followed by a series of pulses emulating a telephone dial. The transmitter site continued to use a stepper for channel selection. Metering was audible FM (voltage to frequency converter) over the telephone line or subaudible over AM or SCA. I seem to recall a DC metering module was also available.
- PBR-30 - A 30 channel remote control. Used a series of plug-in cards for the various functions. A stepper relay selected the analog sample and did raise/lower routing. One station I worked at routed the 220VAC control lines from a Collins 1 kW transmitter directly through the PBR-30. Control was achieved with multiple tones on the phone line (one for each function, such as raise, lower, step). Metering could be either DC on the control line, an audible tone on the same line (voltage controlled oscillator where the sample voltage is represented by frequency), or subaudible tone on the main AM carrier. The PBR-30 included a telemetry fail safe which was required for television.
- TRC-15A - This replaced the stepper at the transmitter site with individual relays. Otherwise, it was similar to the PBR-15. Metering was either audible or subaudible voltage to frequency.
- DRS-1A - This was a modem and UART based system. On the metering side, the voltage to frequency converter of previous systems was replaced with a digital panel meter. The digital output of this was formatted and sent to a UART, then to a modem for transmission to the studio. Similarly, button presses at the studio were translated to signals for the UART driving a modem to the transmitter site.
- MRC series - This was the first microprocessor based remote control system by Moseley.
MRC-1 Remote Control System (1980)
- PCL-303/C Composite STL. 1968. 13MB
- PBR-21A 15 channel remote control. 1966. 17MB
*SCG-4T Subcarrier Generator, 1972 - 1.7MB
- SCG-6/SCD-6 Subcarrier System. 1968. 2.8MB
- TGR-340 Audio Gain Rider was designed to automatically ride gain on a program line, providing maximum modulation on a long-term basis, with a minimum of audible or measurable byproducts. Contributed by Tom Osenkowsky. Scanned by Gary Blau. 1979. 4.6MB
*TRC-15A remote control system. about 1975 - 12.3M
Other *GE Quadraphonic - Jim Tonne has contributed photos and history of the development of quadraphonic transmission equipment for General Electric by Moseley Associates.
Back to HomePage