FM antennas contain a series of conductors that produce electromagnetic fields. Depending on how they are used, FM antennas can boost weak FM signal receptions or bypass very strong ones. They are available in dipole, folded dipole, omnidirectional, and high gain directional types. They can be installed outdoors on rooftops or near windows inside buildings.
Dipole FM Antennas have impedance of 70 ohm. They are usually installed alongside FM radios or stereos. They measure at least 6 feet long and have flexible jackets for installing them in the ideal orientation to get maximum reception. Dipoles have knobbed ends for easy installation.
Folded Dipole FM Antennas are standard dipoles with additional wires that increase their impedance up to 300 ohm. They can be installed outdoors or indoors. Their amplifier settings can be adjusted to correct very weak FM signals or bypass very strong ones.
Omnidirectional FM Antennas are folded bent dipoles with circular polar systems. They pick up all possible FM radio signals from all directions. They come in curved “S” and “turnstile” models. Most Omnidirectional FM Antennas have an impedance of up to 300 ohm. Omnidirectional antennas are ideal for suburban and city receptions.
High Gain Directional FM Antennas are used for picking up faraway FM stations with weak radio signals. They have impedance of approximately 75 ohm. Their beamwidths can accept or reject other FM frequencies. They also come in log periodic and yagi types. Yagi antennas have elements found throughout their entire width, while log periodic antennas have elements along the sides.
Choosing FM Antennas (Buying Tips)
Corrosion resistance. Choose an FM antenna made of durable stainless steel. It should also be coated in zinc for maximum rust resistance.
Range. If you live in a remote area, choose an FM antenna with 30 to 40-mile range that can pick up radio signals and frequencies from nearby towns and cities.
Frequency. Choose an FM antenna that can pick up radio frequencies between 88.1 to 107.9 MHz for listening to a broad range of radio stations.
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