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| TB 11-5820-890-10-12
8.
Operation Instruction for BCT to BCT (16 kbps). Set the following parameters: Set BCT and RT data rates to 16
kbps and set BCT KY switch to ON. The remaining switch settings are the same as described in paragraph 6. Tone
Pair N/A in 16K.
9.
System Troubleshooting Procedures. These steps will assist you in isolating faulty system components when you
have a problem communicating in a net using data transmission. These procedures assume that the net and secure
FH voice communication has been established. If you are unable to communicate using data transmission, do the
following troubleshooting steps in the order provided.
CHECK LOCAL RADIO. Use the data on the FH voice net to determine that the radio net is operating.
CHECK WITH OTHER NET MEMBERS. Do you have data communication with some stations but
not others? The other station may be out of range, temporarily off the air, or has not checked into the
net. If data communication can be established with another station, your system is probably O.K. and
the problem may be at the distant net station.
CHECK SYSTEM CONFIGURATION. Verify proper cabling, initialization and subscriber parameters,
radio set and lightweight TACFIRE switch settings, etc.
NOTIFY MAINTENANCE. If the problem cannot be isolated, notify unit maintenance personnel and
inform your NCS of your communication problem.
10.
Remote Control Operations. The Remote Control Unit (RCU) C-11561 may be used in place of the RT in a
SINCGARS radio system to allow the radio set and antenna to be placed at distances up to 4 km from the local
system. Interoperability between the lightweight TACFIRE and the RCU is the same when the lightweight TACFIRE
is connected to an RT. Table 8-1 provides the switch settings for the radio set and the RCU for remote control
operation.
SWITCH
RCU
RADIO SET
FUNCTION
SO ON
REM
MODE
SC or FH
N/A
DATA
TF
N/A
COMSEC
CT
PT
OFF
N/A
Table 8-1. RCU Settings for Remote Operation
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