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2. Valve RF amplifier - Wikipedia

   en.wikipedia.org/wiki/Valve_RF_amplifier

   A valve RF amplifier (UK and Aus.) or tube amplifier is a device for electrically amplifying the power of an electrical radio frequency signal. Low to medium power valve amplifiers for frequencies below the microwaves were largely replaced by solid state amplifiers during the 1960s and 1970s, initially for receivers and low power stages of ...

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 .

4. Clansman (military radio) - Wikipedia

   en.wikipedia.org/wiki/Clansman_(military_radio)

   Built by Racal BCC. The PRC 351 has 4 watt RF power output, and operates in the 30–75.975 MHz range with a possible 1840 channels spaced 25 kHz apart. This radio is also capable of being mounted on a vehicle in conjunction with the TUAAM. [7] The PRC 352 is identical, with the addition of a 20 watt RF amplifier and can be used as a ground ...

5. MILMEGA - Wikipedia

   en.wikipedia.org/wiki/MILMEGA

   MILMEGA is a company specializing in designing and manufacturing high-power amplifiers for electromagnetic compatibility (EMC) testing. [1] Headquartered in Ryde on the Isle of Wight in England, MILMEGA mainly provides broadband amplifier products with frequency ranges from 80 MHz to 8 GHz, [2] with power levels from 30W - 1kW. [3]

6. Tuned radio frequency receiver - Wikipedia

   en.wikipedia.org/wiki/Tuned_radio_frequency_receiver

   A tuned radio frequency receiver (or TRF receiver) is a type of radio receiver that is composed of one or more tuned radio frequency (RF) amplifier stages followed by a detector (demodulator) circuit to extract the audio signal and usually an audio frequency amplifier. This type of receiver was popular in the 1920s.

7. Klystron - Wikipedia

   en.wikipedia.org/wiki/Klystron

   This is a spare in storage. 5 kW klystron tube used as power amplifier in UHF television transmitter, 1952. When installed, the tube projects through holes in the center of the cavity resonators, with the sides of the cavities making contact with the metal rings on the tube.