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RT-1439/VRC
SINCGARS Non-ICOM Radio

The RT-1439 is a non-ICOM radio from the SINCGARS family of US Combat Radio products. By default, it is only suitable for non-secure communication. It supports (slow) Frequency Hopping (FH) and is backwards compatible with Single Channel radio devices, such as the such as the AN/PRC-77 and the AN/VRC-12, from the Vietnam era.
 
At the heart of the front panel is the keyboard and the red LED display. The keypad is used for the entry of channel numbers and the selection of frequency hopping tables.

To the left of the keypad are the channel and mode selectors. The rig supports single channel operation (SC) as well as frequency hopping (FH). Six preset radio channels can be selected directly, others are entered on the keypad. Also on the left is the power selection, allowing the choice between low power (LO), medium (M), high (HI) and an external power amplifier (PA).
  
Perspective right view of the RT-1439/VRC

To the right of the keypad are two audio connectors. In normal use these are used for the connection of a handset and/or a secure communications unit (ICOM) like the KY-75. The upper connector is also used for an ECCM Fill Device, such as the MX-18290.
 
Front view of the RT-1439/VRC Perspective right view of the RT-1439/VRC Front panel of the RT-1439, showing the two audio connectors with their combined functions. AUDIO/FILL and AUDIO/DATA connectors on the front panel of the RT-1439 Setting the serial baud rate

 
Secure communications (ICOM)
By default the RT-1439 is a non-ICOM device. For the transmission of secure communication (voice and data) an external COMSEC device, such as the KY-57 (Vinson) or the KY-99, is needed. COMSEC devices are connected to the 6-pin U-229 audio sockets (U-329/U) on the right of the front panel. They have their own connection for a key fill device, such as the KYK-13.
 
Accessories
Battery Case Interior of battery case Close-up of the power connector inside the battery case. Battery Charger Close-up of the battery charger connector

 
Further information

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Crypto Museum. Last changed: Wednesday, 21 December 2011 - 13:00 CET.
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