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MFJ Enterprises was an American manufacturer specializing in a wide range of products for the amateur radio market. The company focuses on station accessories, including antenna tuners and antenna switching equipment. MFJ was founded in 1972 by Martin F. Jue. As of 2014, the company was recognized as the largest producer of amateur radio ...
The simplest klystron tube is the two-cavity klystron. In this tube there are two microwave cavity resonators, the "catcher" and the "buncher". When used as an amplifier, the weak microwave signal to be amplified is applied to the buncher cavity through a coaxial cable or waveguide, and the amplified signal is extracted from the catcher cavity.
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 ...
Motorola T5320 FRS handheld radio. The Family Radio Service (FRS) is an improved walkie-talkie radio system authorized in the United States since 1996. This personal radio service uses channelized frequencies around 462 and 467 MHz in the ultra high frequency (UHF) band.
In practice, some UHF connector products will handle over 4 kV peak voltage. [19] Manufacturers typically test UHF jumpers in the 3-5 kV range. [citation needed] UHF connectors are standard on HF amateur amplifiers rated at 1500 + Watts output. [citation needed] In practice, voltage limit is set by the air gap between center and shield.
EC71/5718 – Subminiature UHF triode up tp 1 GHz, for use as an oscillator in the 500 MHz range, 8-pin all-glass wire-ended; EC80/6Q4 – VHF Triode up to 500 MHz; EC81/6R4 – UHF oscillator triode; EC84/6AJ4 – High-mu triode; EC86/6CM4 – UHF triode, PC86/4CM4 with a different heater; EC88/6DL4 – UHF triode, PC88/4DL4 with a different ...
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