R&S M3SR 4100 Series, Operating Manual

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Operating Manual 6175.4760.02 – 01 4.157
M3SR Series 4100 SECOM-H
4.8 SECOM-H
4.8.1 Basics of SECOM-H
A SECOM-H net is a system for voice and data communication in the HF range with protec-
tion by COMSEC (communication security) and TRANSEC (transmission security) proce-
dures. It is configurable in many parameters. The configuration and net management for a
SECOM-H communication system must be supported by a radio net management system
(R&S RNMS3000).
The features of the SECOM-H system are grouped as follows:
• Configuration features
• Security features
• Synchronization features
• Communication features
4.8.1.1 SECOM-H Net
A SECOM-H net is a logical structure for setting up a communication network. It consists of
a set of radios with assigned:
• Hopsets
• Net address and radio addresses
• Necessary radio / SECOM-H parameters
• Keys for TRANSEC and COMSEC
All radios operating in one SECOM-H net must have the same
• Time and date
• Hopset (frequencies for TRANSEC)
• Keyset (COMSEC and TRANSEC keys)
• Net address (unique address of each SECOM-H net)