TM 11-5820-890-10-1
SECTION II. ADDITIONAL NCS PROCEDURES
ITEM
PAGE
FH Update Using ERF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Bringing Another Station Into The Net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-14
Changing Hopset Identification (ID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Monitoring FH Sync Time of Other Nets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
COMSEC Key Loading (Remote Fill) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Jamming and Antijamming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
This procedure is used to update hopsets and lockout sets during net operations.
It can also be used to add new sets. During an update, the net communicates on
the FH channel it has been using.
SPECIAL INSTRUCTIONS
The NCS must load and store the data before doing this procedure. However, new
lockout sets must be loaded into NCS radio holding memory, ERFed to member;
then stored in NCS and member radios.
During an update, the CHAN switch must remain on the same setting. You must
not change the CHAN setting until all updating is complete.
The NCS must retrieve and send lockout sets first; then retrieve and send hopsets.
To ensure continued communications, it is best to store an update hopset in an
empty channel.
If NCS is loading new lockout set: (1) load it into holding memory, (2) ERF to mem-
bers, and (3) store.
FH UPDATE USING ERF. If more than one hopset is needed, repeat steps b thru
h for each.
a.
Set FCTN to LD. Leave all other switches as they have been for past communica-
tions.
b. Contact net members.
c. Tell net members to stand by for update, and in which channel the data is
to be stored. Tell them to acknowledge reception and storing only after it is fin-
ished.
d. Retrieve required set from RT permanent memory:
For lockout set: Press LOAD.
Press LOUT.
For hopset:
Enter number (first digit of lockout set).
Press LOAD.
Enter channel number (1 - 6).
e. Transmit ERF: Press ERF; then resume normal net operation.
f.
Tell members to set CHAN to where updated hopset was stored.
3-13
