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  2. Code 3 (TV series) - Wikipedia

    en.wikipedia.org/wiki/Code_3_(TV_series)

    Code 3 is an American crime drama that aired in syndication in 1956 and 1957. [5] [3] [1] [6] The stories were all based on actual files of the Los Angeles sheriff's office. [4] Stories were presented from the viewpoint of Assistant Sheriff George Barrett.

  3. Television antenna - Wikipedia

    en.wikipedia.org/wiki/Television_antenna

    A short antenna pole next to a house Multiple Yagi TV aerials. Antennas are commonly placed on rooftops and sometimes in attics. Placing an antenna indoors significantly attenuates the level of the available signal. [19] [20] Directional antennas must be pointed at the transmitter they are receiving; in most cases great accuracy is not needed ...

  4. Twin-lead - Wikipedia

    en.wikipedia.org/wiki/Twin-lead

    For this reason, when attaching a twin-lead line to a coaxial cable connection, such as the 300 Ω twin-lead from a domestic television antenna to the television's 75 ohm coax antenna input, a balun with a 4:1 ratio is commonly used. Its purpose is double: First, it transforms twin-lead's 300 Ω impedance to match the 75 Ω coaxial cable ...

  5. List of Antenna TV affiliates - Wikipedia

    en.wikipedia.org/wiki/List_of_Antenna_TV_affiliates

    The following is a listing of affiliates for Antenna TV, [1] a classic television network, which was launched on January 1, 2011, by Tribune Broadcasting [2] and is now owned by Nexstar Media Group. [ 3 ]

  6. Space–time block code - Wikipedia

    en.wikipedia.org/wiki/Space–time_block_code

    These codes achieve rate-1/2 and rate-3/4 respectively. These two matrices give examples of why codes for more than two antennas must sacrifice rate — it is the only way to achieve orthogonality. One particular problem with , / is that it has uneven power among the symbols it transmits.

  7. Antenna diversity - Wikipedia

    en.wikipedia.org/wiki/Antenna_diversity

    Antenna diversity is especially effective at mitigating these multipath situations. This is because multiple antennas offer a receiver several observations of the same signal. Each antenna will experience a different interference environment. Thus, if one antenna is experiencing a deep fade, it is likely that another has a sufficient signal ...

  8. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    Code 1: A time critical event with response requiring lights and siren. This usually is a known and going fire or a rescue incident. Code 2: Unused within the Country Fire Authority. Code 3: Non-urgent event, such as a previously extinguished fire or community service cases (such as animal rescue or changing of smoke alarm batteries for the ...

  9. Tower Mounted Amplifier - Wikipedia

    en.wikipedia.org/wiki/Tower_Mounted_Amplifier

    There are occasions when the cable between the antenna and the receiver is so lossy (too thin or too long) that the signal weakens from the antenna before reaching the receiver; therefore it may be decided to install TMAs from the start to make the system viable. In other words, the TMA can only partially correct, or palliate, the link imbalance.