TM 11-5820-890-10-3
BASIC COMSEC PROCEDURES Continued
OPERATION. Use the following procedure to operate KY57 with RT. Refer to the KY57 manual for additional information
as required.
a.
Set RT FCTN to SQ ON.
b.
Set KY57 MODE switch as required.
c.
Set RT MODE to SC or FH as required.
d.
Set RT RF to lowest setting possible for good communication.
e.
Set KY57 POWER to ON, and press PTT to clear alarm if operating in CT.
PREMISSION CHECK
If you do not perform the following steps, you may risk radio failure during a mission.
•
Make sure your radio is assembled correctly.
•
Make sure you've done the following PMCS and the routine checks.
PMCS: Battery physical condition (page 53), battery electrical condition (page 53), receiver transmitter self test (page 54),
transmitter (page 55). mount ing adapter and mounting base (page 55), remote operation (page 56), control monitor self
test (page 56), control monitor RT function control (page 57).
Routine checks: Antennas, cables and cable connectors, controls and switches, mounting and assembly hardware.
•
Check battery life condition.
•
If FCTN is at STW , move it to OFF ; then move it to SQ ON.
•
Check required load. (Do you have the correct FH data, COMSEC keys in KY57 (if used), and MAN frequency?) C
Stand by for net opening (NCS will contact you). Make sure you can establish communication on each net you will be
operating in. If you cannot communicate, perform the communication troubleshooting procedure or refer to operator
troubleshooting.
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