2.
Transmission Protection.
This requires the preoperational selection
of antenna placement, transmitter power selection, and frequency usage be in
concert with preventive ECCM principles. Additional transmission protection
can be provided for single-channel radios.
These include the AN/VRC-12
family of radios and the SINCGARS. Using steerable null antenna processor
(SNAP-1) allows efficient jam-free reception.
This occurs even when the
operator does not know the location of the jamming or communications
An example is the OL-275/VRC used with the AN/VRC-12 and
SINCGARS radios.
a. The OL-275/VRC SNAP-1 consists of a CP-1380/VRC steerable null
antenna processor and a J-3792/VRC interconnecting box. It also includes a
CX-13179/U special purpose electrical cable assembly (Figure 2-2).
Figure 2-2.
OL-275( )/VRC steerable null processing group.
SS0135
2-10
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