ANSWER KEY and FEEDBACK
Correct Answer and Feedback
Operational techniques and systems design.
The two major areas of preventive ECCM are operational
techniques and systems design (page 2-2, para 1).
Remedial ECCM are friendly actions taken in response to
enemy jamming (page 2-7, para 1).
Site selection, radiated power, and antenna selection are
installation (page 2-2, para 1b(1)).
Prosigns are normally used with radiotelegraph (page 2-4,
Operate on fixed schedules
Examples of proper radio operator procedure include
operating on a random schedule, encrypting EEFI, and
reducing distinguishable operator procedures. Operating on
a fixed schedule is not an example of proper radio operator
procedure (page 2-3, para 1b(2)(b), and 1b(2)(d)).
Preamble jamming involves broadcasting synchronization
tones over the operating frequency of a radio net that uses
voice security devices.
It often causes radios to be
locked in the RECEIVE mode (page 2-9, para 1a(1)(g)).