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2. MFJ Enterprises - Wikipedia

   en.wikipedia.org/wiki/MFJ_Enterprises

   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 products worldwide. [2]

3. Antenna rotator - Wikipedia

   en.wikipedia.org/wiki/Antenna_rotator

   An antenna rotator (or antenna rotor) is a device used to change the orientation, within the horizontal plane, of a directional antenna. Most antenna rotators have two parts, the rotator unit and the controller. The controller is normally placed near the equipment which the antenna is connected to, while the rotator is mounted on the antenna ...

4. AN/VRC-12 - Wikipedia

   en.wikipedia.org/wiki/AN/VRC-12

   Power Output: 35 to 40 watts Power Source: Vehicle power or generators Antenna: AT-912/VRC or AS-1729/VRC for mobile use, RC-292 for fixed Type of Service: 30K0F3E (FM) vehicular radio Weight: 100 lb (45 kg) Security Could be used with TSEC/KY-8 or KY-38 NESTOR and, later, the KY-57 VINSON secure voice systems

5. Martin F. Jue - Wikipedia

   en.wikipedia.org/wiki/Martin_F._Jue

   Martin F. Jue is an American business personality, inventor and founder/owner of several companies, including MFJ Enterprises, Hy-Gain, Cushcraft, [2] Ameritron, Vectronics and others, all of which manufacture products for the amateur radio industry. He holds numerous patents on specialized technology, especially in the area of T network field ...

6. Antenna tuner - Wikipedia

   en.wikipedia.org/wiki/Antenna_tuner

   An antenna tuner, a matchbox, transmatch, antenna tuning unit (ATU), antenna coupler, or feedline coupler is a device connected between a radio transmitter or receiver and its antenna to improve power transfer between them by matching the impedance of the radio to the antenna's feedline. Antenna tuners are particularly important for use with ...

7. AN/ARC-5 - Wikipedia

   en.wikipedia.org/wiki/AN/ARC-5

   The antecedent of the AN/ARC-5 system was the U.S. Navy's ARA/ATA system, initially deployed in 1940. The designations ARA and ATA are a pre-World War II Navy equipment nomenclature. The major units of the ARA are five receivers covering 0.19 to 9.1 MHz, each unit with its own dynamotor power supply.

8. Remote radio head - Wikipedia

   en.wikipedia.org/wiki/Remote_Radio_Head

   FTTA architecture has enabled lower power requirements, distributed antenna sites, and a reduced base station footprint than conventional tower sites. The use of FTTA will promote the separation of power and signal components from the base station and their relocation to the top of the tower mast in a Remote Radio Head (RRH).

9. Stub (electronics) - Wikipedia

   en.wikipedia.org/wiki/Stub_(electronics)

   They are often used to replace discrete capacitors and inductors, because at UHF and microwave frequencies lumped components perform poorly due to parasitic reactance. [1] Stubs are commonly used in antenna impedance matching circuits, frequency selective filters , and resonant circuits for UHF electronic oscillators and RF amplifiers .