{"product_id":"original-u-s-korean-vietnam-war-an-prc-77-radio-man-pack-set-with-st-120-pr-harness-2","title":"Original U.S. Korean \/ Vietnam War AN\/PRC-77 Radio Man Pack Set with ST-120\/PR Harness","description":"\u003cp\u003eOriginal Item: Only One Available. This is an original Korean War Era AN\/PRC-77 Radio Back Pack Set with a ST-120\/PR canvas carry harness set. This example is offered in good condition, but we cannot guarantee functional working order as we have not tested it. We could not find any markings to denote a date of manufacture.\u003c\/p\u003e\n\u003cp\u003eThe headset is retained but the end of it has heavy electrical tape repairs, so it’s likely not working. The pieces for the antenna appear all present.\u003c\/p\u003e\n\u003cp\u003eThe AN\/PRC 77 Radio Set is a manpack, portable VHF FM combat-net radio transceiver manufactured by Associated Industries and used to provide short-range, two-way radiotelephone voice communication. In the Joint Electronics Type Designation System (JETDS), AN\/PRC translates to \"Army\/Navy, Portable, Radio, Communication.\"\u003c\/p\u003e\n\u003cp\u003eThe AN\/PRC-77 entered service in 1968 during the Vietnam War as an upgrade to the earlier AN\/PRC-25. It differs from its predecessor mainly in that its final power amplifier stage is made up of solid state components and not vacuum tubes like the PRC-25. Also the PRC-77 has the ability to use voice encryption devices, while the PRC-25 could not. These include the TSEC\/KY-38 NESTOR equipment used in Vietnam and the later KY-57 VINSON family. Problems were encountered in Vietnam with the combination as described in the NESTOR article.\u003c\/p\u003e\n\u003cp\u003eThe AN\/PRC 77 consists of the RT-841 transceiver and minor components. It can provide secure voice (X-mode) transmission with the TSEC\/KY-57 VINSON voice encryption device, but is not compatible with the SINCGARS frequency hopping mode. During the Vietnam War, the PRC-77 used the earlier TSEC\/KY-38 NESTOR voice encryption system.\u003c\/p\u003e\n\u003cp\u003eMajor components:\u003cbr\u003e- Transmitter \/ Receiver unit\u003cbr\u003e- Battery\u003c\/p\u003e\n\u003cp\u003eMinor components - CES (Complete Equipment Schedule):\u003cbr\u003e- 3 ft antenna - 'bush\/battle whip'\u003cbr\u003e- 10 ft antenna\u003cbr\u003e- 3 ft antenna base - 'gooseneck'\u003cbr\u003e- 10 ft antenna base\u003cbr\u003e- Handset\u003cbr\u003e- Harness\u003c\/p\u003e\n\u003cp\u003eTechnical characteristics\u003cbr\u003eChannels: 920 channels across two bands using 50 kHz steps\u003cbr\u003eFrequency Ranges: 30.00 to 52.95 MHz (Low Channel);\u003cbr\u003e53.00 to 75.95 MHz (High Channel)\u003cbr\u003eEstimated Range: 8 km (5 mi) Dependent on conditions\u003cbr\u003ePower Output: 1.5 to 2.0 watts\u003cbr\u003ePower Source: Current (2015) military batteries:\u003cbr\u003eBA-5598\/U LiSO2 nonrechargeable\u003cbr\u003eBB-386\/U NiMH and BB-2598\/U Li-ion rechargeable\u003cbr\u003eObsolete (unavailable) nonrechargeable military batteries:\u003cbr\u003eBA-386\/PRC-25 zinc-carbon, BA-398\/PRC-25 zinc-carbon cold weather vest (use w\/cable to radio battery connector), BA-4386\/PRC-25 magnesium\u003cbr\u003eDiscontinued but available military or equivalent batteries:\u003cbr\u003eBA-3386\/U alkaline nonrechargeable\u003cbr\u003eBB-586\/U NiCad and BB-LA6 SLA rechargeable\u003cbr\u003eAntenna: AT-271A\/PRC 10 ft (3.0 m) multi-section whip \"Static\" Whip-a-way, or\u003cbr\u003eAT-892\/PRL-24 3 ft semi-rigid steel tape \"Bush-whip\"\u003cbr\u003eType of Service: 30K0F3E (FM)\u003cbr\u003eManpack field radio\u003cbr\u003eland mobile service\u003cbr\u003eWeight: 13.75 lb (6.2 kg)\u003c\/p\u003e\n\u003cp\u003eSecurity Could be used with TSEC\/KY-38 NESTOR and, later, the KY-57 VINSON secure voice systems.\u003cbr\u003e\u003c\/p\u003e","brand":"Original Items","offers":[{"title":"Default Title","offer_id":44049277681733,"sku":"ONSV24HFS038","price":695.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1524\/1342\/files\/ONSV24HFS038__01.jpg?v=1764177065","url":"https:\/\/www.ima-usa.com\/products\/original-u-s-korean-vietnam-war-an-prc-77-radio-man-pack-set-with-st-120-pr-harness-2","provider":"International Military Antiques","version":"1.0","type":"link"}