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TM 11-5821-333-12
2-20. LOADING FH DATA (ICOM RADIO)
Radios require local fills of FH data to operate in the frequency hopping mode. For the ICOM radio, the data
needed is a hopset. FH data elements 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
PRESET
MAN
MODE
FH
b. Turn ECCM fill device function switch 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 SOI–directed
e. No response.
positions, if applicable.
f. Press: LOAD
e. Display reads:
g. Press: STO
g. Display reads and blinks:
h. Enter: PRESET number. (Store in
h. Display reads and blinks:
channel 1.)
NOTE
Change to preset 1, return
to MAN, read “COLD”
i.
Turn fill device function switch to OFF.
i.
No response.
j.
Disconnect fill cable and fill device from RT.
j.
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 must be pressed. Do not press Sto if there is to be no change
to the variable in PM.
2-12
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