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  2. Channel memory - Wikipedia

    en.wikipedia.org/wiki/Channel_memory

    There is no way to delete a station from the internal channel map, and a re-scan may be needed; or if the new physical channel is found, it may leave the old mapping in place, causing duplicate channels that cannot be accessed through direct entry of the numbers without also pressing the channel-up/down buttons. Many modern TV sets do an ACMS ...

  3. Television antenna - Wikipedia

    en.wikipedia.org/wiki/Television_antenna

    Outdoor antennas provide up to a 15 dB gain in signal strength and 15-20 dB greater rejection of ghost signals in analog TV. [6] Combined with a signal increase of 14 dB due to height and 11 dB due to lack of attenuating building walls, an outdoor antenna can result in a signal strength increase of up to 40 dB at the TV receiver. [6] Outdoor ...

  4. Antenna amplifier - Wikipedia

    en.wikipedia.org/wiki/Antenna_amplifier

    In electronics, an antenna amplifier (also: aerial amplifier or booster) is a device that amplifies an antenna signal, usually into an output with the same impedance as the input impedance. Typically 75 ohm for coaxial cable and 300 ohm for twin-lead cable. An antenna amplifier boosts a radio signal considerably for devices that receive radio ...

  5. Got new electronics for the holidays? Here's what to do first

    www.aol.com/news/got-electronics-holidays-heres...

    Get Security Alerts, Expert Tips — Sign Up For Kurt’s Newsletter — The Cyberguy Report Here Change default passwords and PINs immediately. Use a combination of letters, numbers and special ...

  6. Signal booster - Wikipedia

    en.wikipedia.org/wiki/Signal_booster

    A signal booster is a system which increases, or appears to increase, the power of a radio signal. The term may refer to: Radio repeater; Relay transmitter;

  7. Diplexer - Wikipedia

    en.wikipedia.org/wiki/Diplexer

    That cable would then run from the roof into the house. At a convenient point, a second diplexer would split the two signals apart; one signal would go to the TV set and the other to the IRD of the DBS set-top box. These usually have an antenna input and a diplexer, so that the antenna signal is also distributed along with the satellite.

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  9. Digital radio frequency memory - Wikipedia

    en.wikipedia.org/wiki/Digital_radio_frequency_memory

    A DRFM system is designed to digitize an incoming RF input signal at a frequency and bandwidth necessary to adequately represent the signal, then reconstruct that RF signal when required. The most significant aspect of DRFM is that as a digital "duplicate" of the received signal, it is coherent with the source of the received signal.

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