TM 11-5820-890-20-1
3-5
3.1.
OPERATIONAL CHECK. Continued
STEPS TO PERFORM
CHECKS TO MAKE
ACTIONS TO TAKE
4.5
Set CB1 to OFF Wait 1 min.
N/A
N/A
Set CB1 to ON
N/A
N/A
Set RT FCTN to SQ ON
RT retains COMSEC, FH, and SC
YES:
Go to STEP 5
data in both FH and SC modes?
NO: Replace RT
*
NOTE: If using an Automated Net Control Device (ANCD), follow ICOM Fill procedure to load COMSEC
keys and FH data in all 6 channels. Otherwise, load COMSEC keys and FH data in Channels 1, 2, and 3.
STEP 5. TRANSMITTER CHECKS:*
STEPS TO PERFORM
CHECKS TO MAKE
5.1
Remove RF cable from RT ANT,
N/A
Connect test set cable from test
N/A (See para. 1.22 for setup)
set RADIO to RT ANT
Connect vehicular antenna cable
N/A
to test set ANT and dummy load.
Set test set MODE to FWD PWR
N/A
Set RT:
CHAN to 1
N/A
MODE to SC
N/A
COMSEC to CT
N/A
5.2
Press PTT and test set
Test set reads 2W or greater?
Push-To-Test
5.3
Set test set MODE to RVS PWR
N/A
Press PTT and test set
Test set reads no more than 1/3** of
Push-To-Test
FWD PWR?
5.4
Press PTT
RT SIG display reads 4 or more?
A C T I O N S T O T A K E
N/A
N/A
N/A
N/A
N/A
N/A
N/A
YES:
Go to Step 5.3
NO:
Go to TS Chart 12
N/A
YES:
Go to Step 5.4
NO:
Go to TS Chart 12
YES:
Go to Step 5.5
NO: Replace RT
5.5
Set RT CHAN to 2
Repeat FWD and RVS PWR
check for CHAN 2
5.6
Set RT CHAN to 3
Repeat FWD and RVS PWR
check for CHAN 3
5.7
Set RT to CHAN 1
Press PTT, count into HS
5.8
Set test set MODE to FREQ
Press PTT and test set
Push-To-Test
5.9
Set RT CHAN to 2
Press PTT and test set
Push-To-Test
5.10 Set RT CHAN to 3
Press PTT and test set
Push-To-Test
N/A
Test set reads no more than 1/3** of
FWD PWR?
N/A
Test set reads no more than 1/3** of
FWD PWR?
N/A
Sidetone heard?
N/A
Test set reads 40998 to 41002?
N/A
Test set reads: 53998 to 54002?
N/A
Test set reads: 74998 to 75002?
N/A
YES:
Go to Step 5.6
NO:
Go to TS Chart 12
N/A
YES:
Go to Step 5.7
NO:
Go to TS Chart 12
N/A
YES:
Go to Step 5.8
NO:
Got to TS Chart 13
N/A
YES:
Go to Step 5.9
NO: Replace RT
N/A
YES:
Go to Step 5.10
NO: Replace RT
N/A
YES:
Go to Step 5.11
NO:
Replace RT
