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SCA-186 Sidekick Audio Subcarrier Generator
https://broadcastengineering.info/download/file.php?id=1100
Audio Subcarrier Generator . OPERATION MANUAL – REV. 2 SCA-186 Audio Subcarrier Generator Revision 2 – March 23, 2006 ... subcarrier generator, modulation monitor, audio processor and transmitter tuning aid. Modulation Sciences has engineered these four devices into one package, designed to
Hi-fi stereo/mono infrared transmitter and stereo sub ...
https://www.st.com/resource/en/datasheet/tsh512.pdf
headset, audio sub-carrier generator. The TSH512 integrates in a single chip low-noise audio preamplifiers with ALC (automatic level control), frequency-modulated oscillators, and linear output buffers to drive the external transistors. The sinusoidal carriers facilitate the filtering and allow high performance audio transmission.
Broadcast Radio Subcarriers or Subsidiary …
https://www.fcc.gov/media/radio/subcarriers-sca
A subcarrier, known also as Subsidiary Communications Authority or SCA, is a separate audio or data channel that is transmitted along with the main audio signal over a broadcast station. These subcarrier channels are not receivable with a regular radio; special receivers are required. Subcarriers are used for many different purposes, including (but not …
Subcarrier Signals: The Unsung Heroes of the FM Dial ...
https://spectrum.ieee.org/subcarrier-signals-the-unsung-heroes-of-the-fm-dial
From there, it usually went through some form of audio processing, and on to the station’s subcarrier generator and then to the exciter. Stations broadcasting subcarriers had to have an FCC type ...
Subcarrier Radio: The Stations Your FM Radio Can’t Access
https://tedium.co/2020/12/01/radio-subcarrier-talking-book-history/
The audio signal for a subcarrier service typically arrived at the station’s FM transmitter site via an equalized telephone line. From there, it usually went through some form of audio processing, and on to the station’s subcarrier generator and then to the exciter. Stations broadcasting subcarriers had to have an FCC type-approved SCA ...
AES E-Library » A Multiplex Stereo Generator
https://www.aes.org/e-lib/browse.cfm?elib=878
A block diagram of the generator is shown in Fig. 2. A 19 kc (-4-2 cps) crystal-controlled oscillator, stable to 20 parts per million, provides the basic pilot signal, and also controls the 38 kc subcarrier generator. The subcarrier gerterator output, a 38 kc push-pull signal, drives the modulator, which consists of two diode bridges.
SUBCARRIER DEMODULATOR
https://www.fmsystems-inc.com/wp-content/uploads/2016/05/FMR611SNisb.pdf
C. Sweep Generator D. Oscilloscope E. Distortion Analyzer F. High Level Video Noise Generator 6.1.2.0 TUNING OF PRESELECTOR Connect the sweep generator, set to the required operating frequency, to J1 (subcarrier input-in) and terminate J2 (subcarrier input-out) with 75 ohms. Adjust the sweep to +/- 1 MHz dispersion. Calibrate the
FM SCA Information - Black Cat Systems
http://www.blackcatsystems.com/radio/sca.html
The normal baseband audio consists of the right and left audio mixed together (R+L). This is so that when listening on a mono receiver, you hear both channels of sound. The difference signal, which is the difference between the right and left channels (R-L) is transmitted on a 38 kHz subcarrier using FM modulation.
FM stereo generator - Sencore, Inc.
https://www.freepatentsonline.com/4823390.html
Briefly, an FM stereo generator is provided which generates both the pilot and stereophonic subcarrier signals. Means are provided for applying left and right stereophonic audio signals to the generator. Means are receptive of the audio signals for providing sum and difference components of the audio signals.
Subcarrier - Wikipedia
https://en.wikipedia.org/wiki/Subcarrier
A subcarrier is a sideband of a radio frequency carrier wave, which is modulated to send additional information. Examples include the provision of colour in a black and white television system or the provision of stereo in a monophonic radio broadcast. There is no physical difference between a carrier and a subcarrier; the "sub" implies that it has been derived from a …
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