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2. Height above average terrain - Wikipedia

   en.wikipedia.org/wiki/Height_above_average_terrain

   The FCC procedure to calculate HAAT is: from the proposed or actual antenna site, either 12 or 16 radials were drawn, and points at 2, 4, 6, 8, and 10 miles (16 km) radius along each radial were used. The entire radial graph could be rotated to achieve the best effect for the station.

3. TV and FM DX - Wikipedia

   en.wikipedia.org/wiki/TV_and_FM_DX

   The development of interest in TV-FM DX as a hobby can arise after more distant signals are either intentionally or accidentally discovered, leading to a serious interest in improving the listener's antenna and receiving installation for the purpose of actively seeking long-range television and radio reception.

4. The 7 Best HDTV Antenna Amplifiers of 2023 For a Better Signal

   www.aol.com/lifestyle/best-high-definition-tv...

   The frequencies range from 300 to 3,000 megahertz, with channels typically numbered from 14 to 83. ... To select the best TV antenna amplifiers, we consulted Lynn Claudy, senior vice president ...

5. Television antenna - Wikipedia

   en.wikipedia.org/wiki/Television_antenna

   The television broadcast bands are too wide in frequency to be covered by a single antenna, so the two options are separate antennas used for the VHF and UHF bands or a combination (combo) VHF/UHF antenna. [6] A VHF/UHF antenna combines two antennas feeding the same feedline mounted on the same support boom.

6. Log-distance path loss model - Wikipedia

   en.wikipedia.org/wiki/Log-distance_path_loss_model

   The log-distance path loss model is a radio propagation model that predicts the path loss a signal encounters inside a building or densely populated areas over long distance. While the log-distance model is suitable for longer distances, the short-distance path loss model is often used for indoor environments or very short outdoor distances.

7. Broadcast range - Wikipedia

   en.wikipedia.org/wiki/Broadcast_range

   The "primary service area" is the area served by a station's strongest signal. The "city-grade contour" is 70 dBμ (decibels relative to one microvolt per meter of signal strength) or 3.16mV/m (millivolts per meter) for FM stations in the United States, according to Federal Communications Commission (FCC) regulations.