EQUIPMENT REQUIRED FOR POINT: The SOI extract or ANCD with SOI information already installed, AN/PRC-119 radio, stopwatch, clipboard, BA 5590 battery, antenna, handset H 250, two field tables, a pencil and a ballpoint pen, and FB Form 20 18.1-R.
an prc 119 119a radio stations
SINCGARS features provide communications interoperability for the Army, Marine, Navy, and Air Force, thus contributing to successful combat operations. It is also consistent with North Atlantic Treaty Organization interoperability requirements. The radios, which is handled by voice and data communications, are designed to be reliable, secure, and easily maintained. Vehicle-mount, backpack, airborne, and handheld form factors are available.
Joint and combined operations require exchanging information, both voice and data, with other participating forces. The Single-Channel Ground and Airborne Radio System (SINCGARS) tactical radio has provided secure, low probability of intercept/electronic attack voice communications in the frequency hopping (FH) mode. Later enhancements provide for the exchange of secure data through the evolving Army and Marine Corps tactical Internets, enabling increased situational awareness and more expedient engagement of the enemy while reducing the probability of fratricide. In addition, the Enhanced Position Location Reporting System (EPLRS) is used by military forces to provide C2 data distribution, battlefield situation awareness, and position location services.
The SINCGARS family has mostly replaced the Vietnam War-era synthesized single frequency radios (AN/PRC-77 and AN/VRC-12), although it can work with them. The airborne AN/ARC-201 radio is phasing out[when?] the older tactical air-to-ground radios (AN/ARC-114 and AN/ARC-131).
The SINCGARS can operate in either the SC or frequency hop (FH) mode, and stores both SC frequencies and FH loadsets. The system is compatible with all current U.S. and allied VHF-FM radios in the SC, non-secure mode. The SINCGARS operates on any of 2320 channels between 30 and 88 megahertz (MHz) with a channel separation of 25 kilohertz (kHz). It accepts either digital or analog inputs and superimposes the signal onto a radio frequency (RF) carrier wave. In FH mode, the input changes frequency about 100 times per second over portions of the tactical VHF-FM range. These continual changes in frequency hinder threat intercept and jamming units from locating or disrupting friendly communications. The SINCGARS provides data rates up to 16,000 bits per second. Enhanced data modes provide packet and RS-232 data. The enhanced data modes available with the System Improvement Program (SIP) and Advanced System Improvement Program (ASIP) radios also enable forward error correction (FEC), and increased speed, range, and accuracy of data transmissions.
Most ground SINCGARS radios have the ability to control output power; however, most airborne SINCGARS radio sets are fixed power. Those RTs with power settings can vary transmission range from approximately 200 meters (660 feet) to 10 kilometers (km) (6.2 miles). Adding a power amplifier increases the line of sight (LOS) range to approximately 40 km (25 miles). (These ranges are for planning purposes only; terrain, weather, and antennae height have an effect on transmission range.) The variable output power level allows users to operate on the minimum power necessary to maintain reliable communications, thus lessening the electromagnetic signature given off by their radio sets. This ability is of particular importance at major command posts, which operate in multiple networks. SC CNR users outside the FH network can use a hailing method to request access to the network. When hailing a network, a user outside the network contacts the network control station (NCS) on the cue frequency. In the active FH mode, the SINCGARS radio gives audible and visual signals to the operator that an external subscriber wants to communicate with the FH network. The SINCGARS operator must change to the cue frequency to communicate with the outside radio system. The network can be set to a manual frequency for initial network activation. The manual frequency provides a common frequency for all members of the network to verify that the equipment is operational. During initial net activation, all operators in the net tune to the manual frequency. After communications are established, the net switches to the FH mode and the NCS transfers the hopping variables to the out stations.
Over 570,000 radios have been purchased.[1] There have been several system improvement programs, including the Integrated Communications Security (ICOM) models, which have provided integrated voice and data encryption, the Special Improvement Program (SIP) models, which add additional data modes, and the advanced SIP (ASIP) models, which are less than half the size and weight of ICOM and SIP models and provided enhanced FEC (forward error correction) data modes, RS-232 asynchronous data, packet data formats, and direct interfacing to Precision Lightweight GPS Receiver (PLGR) devices providing radio level situational awareness capability.
Abbreviations: SINCGARS = Single Channel Ground and Airborne Radio System ICOM = Integrated COMSEC; COMSEC = COMmunications SECurity ALICE = All-purpose Lightweight Individual Carrying Equipment FH = Frequency Hopping SC = Single Channel (Einzelkanal) RT = Receiver Transmitter HistoryIn the Vietnam- and Post-Vietnam-Era PRC-25 and PRC-77 were used (also as mobile versions); in addition to the VRC-12 series. All of them could be jammed very easily:At switched on 150-Hz tone squelch the radios stay in receive mode, no matter who transmits the tone. Using a fixed channel, (FC) it can be found and jammed quickly. SINCGARSThat is why the SINCGARS - system was chosen for the next generation radio.SINCGARS radios use frequency hopping (FH) over the complete tactical band of 30 to 87.975 MHz ( 2.320 channels). The operating frequency is changed 100 times per second.Using SC mode, SINCGARS radios are compatible with their predecessors of the VRC series and the PRC-77 - and can be jammed as easily.The basic set of all SINCGARS- variants is the (Receiver-Transmitter)RT-1523 or RT-1439.The RT-1523 has built-in COMSEC- circuits; the RT-1439 uses an external COMSEC device.The collection holds a: RT-1439 The radio can be used either in frequency hopping mode(FH) , or in single channel mode (SC). It is compatible with all tactical (also older) radios of the US forces and their allies. It has a built in whisper mode.The predecessor PRC-77 could transmit a data signal of 16 kbit / sec., but not a PC- compliant signal. Singcars- radios have an audio/data- input plug for synchronic und asynchronic data modes up to 16 kbit /sek.An integrated self test shows faulty circuits.CY-8523B/PRC is one of the battery boxes for the Sincgar series. Two parallel batteries BA-5590 are used for the voltage of 12V.Two outside contacts connect the main block to the remote control unit (Remote Control Unit - RCU) C-11561. This unit C-11561 looks similar to the RT-1439; both use the same battery box. Additional items are used to equip the RT dur to its needs:Mounting MT-6352, Mounting adapter AM-7239, HF- amplifier AM-7238. et. Special braodband antennas are used, that do not need to be matched.Addition items are: Loudspeaker, programmers for FH, remote control sets, and more.The assembled radio sets are:: AN/PRC-119 (here with RT-1439 main block): RT-1439, battery box with battery, handset, portable antenna, and ALICE-Pack.AN/VRC-87 is the simple mobile radio and consists of: RT, mounting, mounting adapter, mobile antenna, handset and cabling.AN/VRC-88.is a VRC-87, with all additional parts that form a PRC-119. The RT can be removed, and a battery, battery box, portable antenna ans ALICE-pack form a PRC-119.AN/VRC-89is the retransmit- version of the AN/VRC-87. A second RT, a HF amplifier, a mobile antenna and a handset are added.AN/VRC-90is a VRC-87 with HF amplifier.AN/VRC-91is an AN/VRC-90 with all parts needed, so that you can take out the RT and put together a manpack (PRC-119).AN/VRC-92is an AN/VRC-89 with second HF amplifier. So both RT can be used at maximum range. The versions for use in aeroplanes are optically different from the above mentionned radios;technically they are not different.There are three version; all of them can not be remote controlled.RT-1476/ARC-201is the basic version.RT-1477/ARC-201has a second operation front, and can ba built in apart from the pilot's place. This version can be used as retransmit radio.RT-1478/ARC-201can transmit data of 600 and 1200 Baud.
Voice encryption was handled on the PRC-77 by the KY-38 digital NESTOR Secure Voice System and later the VINSON system with the KY-57. The PRC-77, and all the modern military VHF low band radios use a 25 kHz channel spacing (while commercial radios use 5 kHz) in order to support digital 16 kbps encryption of voice or data. The KY-57 VINSON Secure Voice System is a separate box as was the KY-38. The first SINCGARS radios (RT-1439) were designed (J5) to support the use of an external KY-57 for voice encryption.
The next generation squad radio was designed to overcome these difficulties and at the same time to have operational modes that are compatible with the PRC-77. The Single Channel Ground and Airborne Radio System (SINCGARS) is a radio system that supports frequency hopping or normal fixed frequency use. When in frequency hopping mode the radio is a like other squad radios in that it can either talk or listen, but not both at the same time. 2ff7e9595c
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