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Strip the insulation off the end of a coaxial cable to create a simple antenna. Get a coaxial cable that's long enough to go from your TV to the nearest window so you can get the best reception. Use a pair of wire strippers to remove the last 6 inches (15 cm) of insulation from the end of the coaxial cord.

• A directional antenna is a radio-frequency (RF) wireless antenna designed to function more effectively in some directions than in others. The purpose of that directionality is improving transmission and reception of communications and reducing interference.

• The 33-centimeter or 900 MHz band is a portion of the UHF radio spectrum internationally allocated to amateur radio on a secondary basis. It ranges from 902 to 928 MHz and is unique to ITU Region 2 . It is primarily used for very local communications as opposed to bands lower in frequency.

• The wavelength of a radio wave is: λ = 300/F where F is the frequency in mega-Hertz and λ is the wavelength in meters. Antenna elements are typically about a half-wavelength long.

• In electronics, an antenna amplifier (also: aerial eamplifier (booster), Am antennefier) is a device that amplifies an antenna signal, usually into an output with the same impedance as the input impedance. Typically 75 ohm for coaxial cable and 300 ohm for twin-lead cable.

Dipoles rank among the easiest antennas to build, construct or erect for HF amateur radio bands. Commonly used on bands like 80 meters, 40 meters, 20 meters, 15 meters, and 10 meters, dipoles are very useful and can perform excellently well if erected at a high elevation.

For best results, dipoles should be at least 1/2 wavelength above ground level. For the lower bands, especially 160-40 meters, this can become impractical--place your dipole as high as your situation allows.Feb 11, 2014

As the FCC explains in a press release, the 900 MHz band is “currently designated for narrowband land mobile radio communications and primarily used by land transportation, utility, manufacturing and petrochemical companies.”May 13, 2020

Like a vertically suspended dipole antenna, a monopole has an omnidirectional radiation pattern: It radiates with equal power in all azimuthal directions perpendicular to the antenna. The radiated power varies with elevation angle, with the radiation dropping off to zero at the zenith on the antenna axis.

If cost is your primary consideration, the horizontal dipole is a great choice. All you need is wire, insulators, and some support rope to build this simple antenna. ... Vertical antennas naturally have a low angle of radiation, meaning you'll have a good chance of making worldwide contacts.Sep 24, 2020

A dipole is what is termed a balanced antenna. In an ideal world a balun should be used with coaxial feeder (which is unbalanced) to make the transition between balanced and unbalanced systems. The use of a balun will prevent the coax radiating any power or picking up any noise.

Therefore, a dipole antenna requires two parts in order to radiate and the amount of radiation will be proportional to the dipole current. Note also from Figure 2 that, a dipole does not require a “ground” to work. A good analogy is to consider what happens when we clap our hands.

• Types include half-wave 900 MHz dipole antennas, quarter-wave 900 MHz dipole antennas, or compact stub 900 MHz antennas which can be mounted directly onto a device or terminal. The rotating and articulating designs of dipole antennas also offer advantageous levels of flexibility.

• A 900 MHz dipole can be used to boost 900 MHz cellular connectivity as part of a GSM-900 cellular booster or repeater. Cellular repeaters can not only enhance a 900 MHz cellular signal but improve access and connectivity to GSM data services.

• Dipole Antennas of the 850-950MHz frequency band are omnidirectional antennas used for the Global System for Mobile Communication (GSM), CDMA, and ISM applications including LoRa. The dipole antenna mates with the wireless access points that have a female connector and operate in the 900MHz.

• The 70-centimeter band (433 MHz) is known for its long-distance signal propagation but a well-positioned 900 MHz antenna of higher gain can achieve equivalent distances with good signal quality and low noise floor.