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Because of this it is used by radio amateurs, outdoorsmen and professional users worldwide, outputting about a 4 watt FM signal. [ 2 ] [ 3 ] Due to Ofcom regulations, a variety of Baofeng radios ranging from UV-5R to the UV-21 are not able to transmit in the United Kingdom between 480 MHz and 520 MHz despite being advertised to transmit between ...
A transmatch (antenna tuner) is not required to use this antenna near its nominal design frequency of 14 MHz, and judicious length adjustments can sometimes include one other frequency band. All other frequencies require a transmatch. [citation needed] There are many variants of the G5RV antenna. Two variations of the G5RV design, called ZS6BKW ...
Because the 42 – 50 MHz FM signals were originally intended to only cover a relatively confined service area, the sporadic long-distance signal propagation was seen as a nuisance, especially by station management. In February 1942, the first known published long-distance FM broadcast station reception report was reported by FM magazine.
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]
At least 1 ⁄ 4 of the wavelength of feedline must be at 90° angle to the antenna. [3] It is also possible to feed the antenna asymmetrically. [5] Due to the low-angle radiation pattern this antenna has, it performs well for long distance contacts (QSOs) (DX). [3]
An elaborated and expanded version of a 'T' antenna; it is a very large wire transmitting antenna used on VLF bands for VLF time signals or long-range submarine communications. Relative to the even larger wavelengths it is used for, although the antenna is enormous on human-scale it is paradoxically an ultra-short antenna.