TM 11-5820-890-10-3
LOADING FH SYNC TIME
FH sync time is used during FH operation. NEVER confuse FH sync time with the time of day. There are seven separate
clocks inside the radio. There is a base clock, and a clock for each CHAN setting (1 6). MAN and CUE settings will
display the base clock time.
When time is first loaded into the radio (cold start ERF, or manually), all seven clocks are set to the same time. When an
ERF is received into a specific channel, the sender’s net time is also received and stored in the channel with the hopset (it
must be within one hour of base clock time already in the radio). Whenever FH sync time is loaded using the keyboard,
ALL of the clocks in the radio are reset to the base clock’s time. It is not possible to reset the net time for only one channel
manually. This can only be done using ERF.
Updating the FH sync time is done automatically each time a message is sent by the NCS. The NCS must be an active
member of a FH radio net so that member’s radios are updated (NCS is the time standard for net). As an NCS, if you are
a member of more than one net, it is important that you communicate with the NCS of other nets daily.
To find the time of a specific net (checking FH sync time of other nets), set the CHAN to the position where the net’s
hopset is stored; then press CCC/TIME. The display will show that net’s time. It is possible to check the time of a net
while operating in a different net: Enter the number of the channel (1 6) on the keyboard while the time of your operating
net is on display. The display will change to that net’s time.
SYNC TIME DIFFERENCES
plus or minus 4 seconds
plus or minus 1 minute
1 to 59 minutes
normal FH
May use passive late
May use CUE and ERF
net entry to gain nor-
to gain normal FH op-
mal FH operation.
eration.
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