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  2. RF modulator - Wikipedia

    en.wikipedia.org/wiki/RF_modulator

    The modulator is then programmed to broadcast the signals on a certain frequency. That RF broadcast is then received by the connected TV. When the TV is tuned to the programmed channel, the video and audio signal of the source device is accessed. RF modulation can become difficult in a CATV system. High pass, low pass, and notch filters must be ...

  3. Sup'R'Mod - Wikipedia

    en.wikipedia.org/wiki/Sup'R'Mod

    The Sup 'R' Mod II kit has a small printed circuit board, an antenna switch, and a coaxial cable with a ferrite core and RCA connectors.Composite video is received by the circuit board through a short cable terminating in a Molex connector, which plugs into a header on the Apple II motherboard.

  4. Frequency modulation - Wikipedia

    en.wikipedia.org/wiki/Frequency_modulation

    where =, being the sensitivity of the frequency modulator and being the amplitude of the modulating signal or baseband signal. In this equation, f ( τ ) {\displaystyle f(\tau )\,} is the instantaneous frequency of the oscillator and f Δ {\displaystyle f_{\Delta }\,} is the frequency deviation , which represents the maximum shift away from f c ...

  5. Federal Signal Modulator - Wikipedia

    en.wikipedia.org/wiki/Federal_Signal_Modulator

    A Federal Signal Modulator siren in Bay Head, New Jersey. Federal Signal Modulators (also known as Modulator Speaker Arrays) are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes, fires, lahars, tsunamis, or any other disaster. They are identified ...

  6. Radio transmitter design - Wikipedia

    en.wikipedia.org/wiki/Radio_transmitter_design

    A radio transmitter design has to meet certain requirements. These include the frequency of operation, the type of modulation, the stability and purity of the resulting signal, the efficiency of power use, and the power level required to meet the system design objectives. [1]

  7. Talk:RF modulator - Wikipedia

    en.wikipedia.org/wiki/Talk:RF_modulator

    sir , using rf modulator can we convert ntsc signal to pal signal .....? —Preceding unsigned comment added by 122.174.72.219 ( talk ) 06:13, 15 May 2009 (UTC) [ reply ] Such converters do exist, and they are sometimes called "RF modulators", although they are a specific type of modulator and also include other format conversion electronics.

  8. RF connector - Wikipedia

    en.wikipedia.org/wiki/RF_connector

    Various popular RF connectors Electronic symbols for the plug and jack coaxial connectors Time-domain reflectometry shows reflections due to impedance variations in mated RF connectors. An RF connector (radio frequency connector) is an electrical connector designed to work at radio frequencies in the multi-megahertz range.

  9. ZX Spectrum - Wikipedia

    en.wikipedia.org/wiki/ZX_Spectrum

    The Uno was successfully crowdfunded in 2016 and the first boards went on sale the same year. [ 216 ] In January 2014, Elite Systems , who produced a successful range of software for the original ZX Spectrum in the 1980s, announced plans for a Spectrum-themed bluetooth keyboard that would attach to mobile devices.

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