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Broadcast Radio Subcarriers or Subsidiary Communications ...
https://www.fcc.gov/media/radio/subcarriers-sca#:~:text=The%20arithmetic%20sum%20of%20all%20the%20multiplex%20subcarriers,75%20kHz%20may%20not%20exceed%2010%25%20%287.5%20kHz%29.
Broadcast Radio Subcarriers or Subsidiary …
https://www.fcc.gov/media/radio/subcarriers-sca
The arithmetic sum of all the multiplex subcarriers may not exceed 30% modulation (22.5 kHz) (where 100% is 75 kHz deviation from the carrier (or assigned center) frequency ( see 47 CFR Section 73.310, "Percentage Modulation"). The arithmetic sum of all multiplex subcarriers above 75 kHz may not exceed 10% (7.5 kHz).
TV AUDIO DEVIATION: MEASURING AND SETTING IT - FM Systems
https://www.fmsystems-inc.com/tv-audio-deviation-measuring-and-setting-it/
TV AUDIO DEVIATION:MEASURING AND SETTING IT. Measurement and control of TV audio volume has always been with us, but other concerns have usually taken precedence. Loudness contrast between channels is accentuated by program source switching and local ad insertion, not to mention audio volume changes with each new program on any given channel. …
TV AUDIO DEVIATION: MEASURING AND SETTING IT
https://www.fmsystems-inc.com/wp-content/uploads/2016/05/TVAUDIOart.pdf
TV AUDIO DEVIATION: MEASURING AND SETTING IT Measurement and control of TV audio volume has always been with us, but other concerns have usually taken precedence. Loudness contrast between channels is accentuated by program source switching and local ad insertion, not to mention audio volume changes with each new program on any given channel. This
Transmission of a PCM Telemetry Subcarrier with a …
https://repository.arizona.edu/bitstream/handle/10150/612078/ITC_1991_91-762.pdf;sequence=1
manufactured after about 1950. The commercial sound subcarrier is FM, and uses a deviation for the normal audio of ±25 kHz. The broadcast audio subcarrier may contain other services such as stereo, second-language programming, intercom service for remotes, and telemetry for the TV transmitter, all on subcarriers of the audio track. One common
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