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2. Antenna amplifier - Wikipedia

   en.wikipedia.org/wiki/Antenna_amplifier

   In electronics, an antenna amplifier (also: aerial amplifier or booster) 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. An antenna amplifier boosts a radio signal considerably for devices that receive radio ...

3. RF power amplifier - Wikipedia

   en.wikipedia.org/wiki/RF_power_amplifier

   A radio-frequency power amplifier (RF power amplifier) is a type of electronic amplifier that converts a low-power radio-frequency (RF) signal into a higher-power signal. [1] Typically, RF power amplifiers are used in the final stage of a radio transmitter, their output driving the antenna. Design goals often include gain, power output ...

4. Antenna (radio) - Wikipedia

   en.wikipedia.org/wiki/Antenna_(radio)

   Film on working of antenna. In radio engineering, an antenna (American English) or aerial (British English) is an electronic device that converts an alternating electric current into radio waves (transmitting), or radio waves into an electric current (receiving). [ 1 ][ 2 ] It is the interface between radio waves propagating through space and ...

5. Vehicle audio - Wikipedia

   en.wikipedia.org/wiki/Vehicle_audio

   Amplifiers increase the power level of audio signals. Some head units have built-in stereo amplifiers. Other car audio systems use a separate stand-alone amplifier. Every amplifier has a rated power level sometimes noted on the head unit with the built-in amplifier, or on the label of a stand-alone unit.

6. List of car audio manufacturers and brands - Wikipedia

   en.wikipedia.org/wiki/List_of_car_audio...

   Milbert Amplifiers (Vacuum tube car audio equipment) MTX Audio. Monster Cable (manufacturers speaker wiring) Nakamichi (also an OEM option for Lexus vehicles) Naim (specially for ' Bentley ' a British brand) Orion. Panasonic (a brand of Matsushita Electric Industrial Co.) (manufacturers Fender and ELS sound systems for Volkswagen and Acura ...

7. Power antenna - Wikipedia

   en.wikipedia.org/wiki/Power_antenna

   A power antenna is an electrically motorized automotive radio antenna that raises and lowers either manually with a dash-mounted switch or automatically by turning the radio on or off. The automatic kind will also lower when the ignition switch is turned off. Unlike most car antennas adjusted directly by hand, power antennas retract completely ...