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US Radio PRC-77 Antenna Mast Base AB-591



US Army

Funkgerät PRC-77 / PRC-25 Antenna Mast Base AB-591

für den Betrieb / Installation der Faltantenne AT-271.

Gewinde: 3/8-24 oben 5/16-24 unten.

Zustand gebraucht / neuwertig

Made in USA

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10,84 €

Technische Daten


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The PRC-25 was designed to use two different antennas. The AT-892 is a 1 meter long tape measure type antenna that's used with the "Part/Of AT-892" (p/o AT-892) gooseneck base. This is for shorter range communications. For longer range communications the AT-271 antenna is used with the 8" long AB-591 spring base. The PRC-25 (and the PRC-77) need to change antenna matching for the short or long antennas and so the threads on the radio are 5/16-24 to prevent the AT-271 from being connected directly to the radio. This way when the AB-591 which has a "finger" below the 5/16-24 threads is installed a switch is actuated selecting the antenna matching circuitry for the long AT-271. When the 1 meter tape antenna is installed the switch is not activated and the match is for the short antenna.

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