Poor reception makes it difficult to listen to a radio broadcast or communicate on a two-way radio. The signal strength of the reception depends on the power output of the station and the device receiving the signal. If you transmit or receive radio signals, use a bilateral amplifier to boost the power of the signal in both directions. Using an amplified device, however, requires notification or permission from the Federal Communications Commission.
Bilateral Amplifiers
A bilateral amplifier improves the spread spectrum radio frequency in the range of 902 to 928 megahertz. The amplifier improves both the transmitted and received radio signals. The power boost takes place at the antenna preventing any power loss that might otherwise take place. When the amplifier transmits, it typically generates one to five watts of power. This dramatically extends the range of the spread spectrum radio. A bilateral amplifier can also reduce harmonic output and intercept points from other transmissions.
The Process
Most bilateral amplifiers have the same basic components, an amplifier mounted near or on the antenna, a diplexer and the power supply. The amplified power comes from the power supply and passes through the signal cable to the antenna. The amplifier separates the signal from the power and uses it to increase the receiving and transmitting ability of the antenna. Some bilateral amplifiers can also receive direct power without using a diplexer.
Bilateral Amplifiers
A bilateral amplifier increases the power of a signal by taking power from an energy source and controlling the output to match the input signal. The amplifiers specification dictates the input and output properties and the resulting power gain for the device. The rate of oscillation for radio frequency is between 30 kilohertz and 300 gigahertz. This corresponds to the frequency of electric signals used to receive and transmit radio waves. The power produced by the amplifier must also have strict controls because the increased energy can cause a lot of interference.
FCC Compliance
The FCC strictly regulates devices that amplify antenna systems. Any system not part of a FCC Certified System is prohibited from use in the United States. Additionally, the FCC requires that when you purchase a bilateral amplifier, you certify the purpose of the purchase and your intended use for the amplifier. You cannot use a bilateral amplifier to transmit unlicensed radio frequency or override any of the regulations established by the FCC.
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