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  2. AN/ARC-190 - Wikipedia

    en.wikipedia.org/wiki/AN/ARC-190

    The ARC-190 is a military HF radio that operates between 2-30 MHz and transmits at 300+ watts.It features a dual heterodyne receiver/transmitter that uses IF frequencies of 97.8 and 1.8 MHz, an antenna coupler that is pressurized to 7±1 PSI with dry nitrogen (air) which (1) prevents high voltage arcing, (2) prevents corrosion, (3) provides a uniform cooling medium, and one of various controls ...

  3. AN/ARC-210 - Wikipedia

    en.wikipedia.org/wiki/AN/ARC-210

    The ARC-210 program began in 1990 as an improved version of the AN/ARC-182, adding jam-reisistant SINCGARS capability to communicate with Army radios for close air support. [2] The Arc-210 is installed on more than 180 platforms and is operating in more than 40 countries. As of 2010, 30,000 have been produced [3] and by October 2016, 40,000 ...

  4. Numerical Electromagnetics Code - Wikipedia

    en.wikipedia.org/wiki/Numerical_Electromagnetics...

    Modeling an antenna with 100 wire segments requires 100 3 = 1 million calculations. Increasing the number of elements by a factor of 10 requires 1000 3 = 1 billion calculations, increasing the computing time by a factor of 1000, assuming the simulation completes at all given memory limitations and such.

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  6. AN/SPY-1 - Wikipedia

    en.wikipedia.org/wiki/AN/SPY-1

    There are 4,096 total radiators, 4,352 receivers, and 128 auxiliary elements on each antenna array. The power requirement of SPY-1A is four times that of the AN/SPS-48. The AN/UYK-7 computer controls SPY-1. [5]: 316–317 SPY-1A is a development of SPY-1, resulting from the deployment of SPY-1-equipped USS Ticonderoga off the Lebanese coast. It ...

  7. Main lobe - Wikipedia

    en.wikipedia.org/wiki/Main_lobe

    In a radio antennas, the main lobe or main beam is the region of the radiation pattern containing the highest power or exhibiting the greatest field strength.. The radiation pattern of most antennas shows a pattern of "lobes" at various directions, where the radiated signal strength reaches a local maximum, separated by "nulls", at which the radiation falls to zero.

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    1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more. AOL Mail for Verizon Customers.

  9. Radio transmitter design - Wikipedia

    en.wikipedia.org/wiki/Radio_transmitter_design

    A radio transmitter or just transmitter is an electronic device which produces radio waves with an antenna. Radio waves are electromagnetic waves with frequencies between about 30 Hz and 300 GHz. The transmitter itself generates a radio frequency alternating current, which is applied to the antenna. When excited by this alternating current, the ...

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