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Television Frequencies - The RadioReference Wiki
https://wiki.radioreference.com/index.php/Television_Frequencies
NTSC - Technical Details - Transmission Modulation Scheme
https://www.liquisearch.com/ntsc/technical_details/transmission_modulation_scheme
An NTSC television channel as transmitted occupies a total bandwidth of 6 MHz. The actual video signal, which is amplitude-modulated, is transmitted between 500 kHz and 5.45 MHz above the lower bound of the channel. The video carrier is 1.25 MHz above the lower bound of the channel. Like most AM signals, the video carrier generates two ...
US6184921B1 - Method for transmitting VSB digital TV …
https://patents.google.com/patent/US6184921B1/en
The television signal transmission signal is susceptible to cochannel interference from NTSC television signal with a video carrier 1.25 MHz above the …
Worldwide TV Systems (NTSC, PAL, and SECAM)
http://www.paradiso-design.net/TVsystems_worldwide.html
NTSC Signal Specifications - antique radio
https://antiqueradio.org/art/NTSC%20Signal%20Specifications.pdf
7 NTSC SIGNAL SPECIFICATIONS December, 1953 and having a transfer gradient (gamma exponent) of 2.23 associated with each primary color. The voltages E R, E G, and E B may be respectively of the form E R 1/γ, E G 1/γ, and E B 1/γ, although other forms may be used with advances in the state of the art. E Q and E I are the amplitudes of two orthogonal components …
Multichannel Television Sound - Wikipedia
https://en.wikipedia.org/wiki/Multichannel_television_sound
Multichannel Television Sound, better known as MTS, is the method of encoding three additional audio channels into an analog NTSC -format audio carrier. It was developed by the Broadcast Television Systems Committee, an industry group, and sometimes known as BTSC as a result.
US6426780B1 - DTV receiver with low-band final I-F …
https://patents.google.com/patent/US6426780B1/en
This facilitates RLC analog filtering, such as a Butterworth-Thomson-transition filter or a bridged-T trap filter, being used for suppressing the frequency-modulated audio carrier of co-channel...
analog - Why the audio subcarrier is never transmitted ...
https://electronics.stackexchange.com/questions/247605/why-the-audio-subcarrier-is-never-transmitted-with-baseband-analogue-video-signa
I don't know what is the practical bandwidth for a typical composite video cable, but in PAL regions, the baseband signal already carries the 4.43 MHz chroma carrier - around the same frequency that NTSC (and PAL-M/N) audio is on (4.5 MHz), so I guess that suffices as a proof of feasibility at least in NTSC regions.
BTSC Stereo Audio for Analog TV | TV Tech
https://www.tvtechnology.com/miscellaneous/btsc-stereo-audio-for-analog-tv
Audio sent to a television transmitter was used to frequency-modulate the aural carrier located 4.5 MHz above the visual carrier. In 1984, the Broadcast Television Systems Committee, a subcommittee of the Electronic Industries Association (EIA), evaluated various systems for delivering stereo audio over NTSC television channels.
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