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 PRC-80 |
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Sincgars, PRC-119; RT-1439 |
 Scimitar V |
Abbreviations: History 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. SINCGARS 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:
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::
(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-89 is the retransmit- version of the AN/VRC-87. A second RT, a HF amplifier, a mobile antenna and a handset are added. AN/VRC-90 is a VRC-87 with HF amplifier. AN/VRC-91 is 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-92 is 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-201 is the basic version. RT-1477/ARC-201 has 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-201 can transmit data of 600 and 1200 Baud.
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