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2. Television antenna - Wikipedia

   en.wikipedia.org/wiki/Television_antenna

   Indoor antennas are designed to be located on top of or next to the television set, but are ideally placed near a window in a room and as high up as possible for the best reception. [1] The most common types of indoor antennas are the dipole [2] ("rabbit ears"), which work best for VHF channels, and loop antennas, which work best for UHF. [3]

3. Digital television transition in the United States - Wikipedia

   en.wikipedia.org/wiki/Digital_television...

   Many antennas marketed for digital TV are designed for UHF, which most digital stations use. VHF analog signals travel further than UHF signals, but watchable VHF digital signals appear to have a more limited range than UHF with the lower power they are assigned, and they do not penetrate buildings as well, especially in larger cities.

4. Very high frequency - Wikipedia

   en.wikipedia.org/wiki/Very_high_frequency

   VHF is the first band at which wavelengths are small enough that efficient transmitting antennas are short enough to mount on vehicles and handheld devices, a quarter wave whip antenna at VHF frequencies is 25 cm to 2.5 meter (10 inches to 8 feet) long.

5. Bowman (communications system) - Wikipedia

   en.wikipedia.org/wiki/Bowman_(communications_system)

   Bowman is the name of the tactical communications system used by the British Armed Forces.. The Bowman C4I system consists of a range of HF radio, VHF radio and UHF radio sets designed to provide secure integrated voice, data services to dismounted soldiers, individual vehicles and command HQs up to Division level.

6. Discone antenna - Wikipedia

   en.wikipedia.org/wiki/Discone_antenna

   The discone antenna has a useful frequency range of at least 10 to 1. [2] [3] When employed as a transmitting antenna, a properly constructed discone is just as efficient as an antenna designed for a more limited frequency range. The extra bandwidth comes from the controlled taper and large termination radius of the cone.

7. Halo antenna - Wikipedia

   en.wikipedia.org/wiki/Halo_antenna

   A halo antenna is a self-resonant antenna: Its feedpoint impedance is reactance-free / purely resistive at the design frequency. A small loop antenna, on the other hand, has lower radiation resistance [ b ] and is not self-resonant; it requires some form of impedance matching to counter the loop's reactance – in practice, this usually ...