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TM 11-5821-333-12
2-21. LOADING FH DATA (NON-ICOM RADIO).
Non-lCOM Radios require local fills of FH data also.
The procedures followed to load this data is similar to those
used to fill the ICOM radio. For the Non-lCOM radio, the data needed is the called a TRANSEC Key. FH data ele-
ments not loaded by local fill are provided by ERF during net openings and FH net updates.
ACTION
RESPONSE
a. Set radio switches:
a. No response.
FUNCTION
LD-V
PRESET
MAN
MODE
FH
b. Turn ECCM fill device to OFF.
b. No response.
c. Use fill cable to connect fill device to RT.
c. No response,
d. Set ECCM fill device function switch to ON.
d. No response.
e. Set fill device and RT to NCS or S01-directed
e. No response.
positions, if applicable.
f. Press: H-Ld
f. Display reads and blinks:
g. Turn fill device function switch to OFF.
g. No response.
h, Disconnect fill cable and fill device from RT.
h. Local fill tasks are completed.
OPTION
If the display shows “Hid t“ at the end of the procedure, a variable is already in the Permanent
Memory (PM). The one just loaded is in the Holding Memory (HM). If the new one in HM is to be
made the operating variable, Sto/ENT must be pressed. Do not press Sto/ENT if there is to be no
change to the variable in PM.
NOTES
Both ICOM and Non-lCOM radios require local fills of FH data in order to operate in the
frequency hopping mode.
For the ICOM radio, the FCTN switch is set to “ LD”, while the
Non-lCOM radio uses the “LD-V” position. Procedures are otherwise identical. FH data
elements not loaded by local fill are provided by ERF during net openings and FH net up
dates, for which both ICOM and Non-lCOM radios use the “LO” position.
Same procedure applies when changing FH data for during-operation updates using a fill
device.
2-13
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