4. The AN/MSC-64(V) FT is transported by a 2ƒ-ton truck and trainer, and is crewed by three operators.
Other technical data is listed below:
Frequency range-225 to 400 MHz.
Power output-10 to 100 watts.
Operating mode-AFSAT.
Modulation type-noncoherent FSK.
Data rate-75 bp/s.
Encryption device-TSEC/KN-2.
Spread spectrum technique-frequency hopping (FH).
LEARNING EVENT 5: ANTIJAMMING AND ECCM TECHNIQUES
1. The SCS uses FH emission techniques as an ECCM capability and terminal hardening against the effects of
electromagnetic pulse (EMP). The CGCPT uses wideband operation of coded FSK, pseudorandomly generated,
suppressed carrier RF burst that is frequency hopped. This type of RF emission provides excellent ECCM
protection for discrete addressing, message privacy, and multiple addressing. For narrowband operations,
noncoherent FSK is used.
2. Wideband operation is only used between the CGCPT and the national command authority AFSATCOM
terminals. SCS, a UHF system, lacks any antijamming protection to the TACSAT terminal outside of the
emission techniques listed previously. The short transmission times of burst communications present less
attractive jamming targets than do longer continuous communications of regular nets. The only options
available to TACSAT UHF terminals, in addition to short burst communications, are alternate frequency
selection and mobility.
SECTION II. MILSTAR
LEARNING EVENT 6: SYSTEM DESCRIPTION
1. The Army's tactical command and control (C2) communications must be reliable, long range, transportable,
and secure. These communications must survive in severe electronic warfare (EW)/NBC environments where
ground relay networks that use prominent terrain may be disrupted. They must support the critical
communications needs of the tactical commander. The MILSTAR SATCOM system provides these
capabilities. It integrates SATCOM with an ECCM capability and balanced nuclear
SS0031
6-4
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