TM 11-5820-890-20-1
2.2.
OPERATIONAL CHECK. Continued
STEP 5. TRANSMITTER CHECKS:*
STEPS TO PERFORM
5.1
Remove antenna from RT ANT
Connect RF cable from test set
RADIO to RT ANT
Connect test set ANT to
dummy load
Set test set MODE to FWD PWR
Set RT
CHECKS TO MAKE
N/A
N/A (See para. 1.22, for setup)
N/A
N/A
N/A
ACTIONS TO TAKE
N/A
N/A
FCTN to SQ ON
CHAN to1
MODE to SC
RF PWR to HI
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
5.2
Press PTT and test set
Test set reads 2.0 W or greater?
Push-To-Test
YES:
Go to Step 5.3
NO:
Go to TS Chart 2
5.3
Press PTT
SIG display reads 4 or more?
YES:
Go to Step 5.4
NO:
Replace RT
5.4
Repeat above check for CHAN 2
SIG display reads 4 or more?
5.5
Repeat above check for CHAN 3
SIG display reads 4 or more?
YES:
Go to Step 5.5
NO: Replace RT
YES:
Go to Step 5.6
NO:
Replace RT
5.6
Set RT CHAN to 1
Press PTT, count into HS
N/A
Sidetone heard?
N/A
YES:
Go to Step 5.7
NO: Replace RT
N/A
YES:
Go to Step 5.8
NO: Replace RT
5.7
Set test set MODE to FREQ
Press PTT and test set
Push-To-Test
N/A
Test set reads 40998 to 41002?
5.8
Set RT CHAN to 2
Press PTT and test set
Push-To-Test
N/A
Test set reads 53998 to 54002?
N/A
YES:
Go to Step 5.9
NO:
Replace RT
5.9
Set RT CHAN to 3
Press PTT and test set
Push-To-Test
N/A
Test set reads 74998 to 75002?
N/A
YES:
Go to Step 5.10
NO:
Replace RT
5.10 Set RT FCTN to RXMT
Connect HS to RT RXMT
Listen at HS
N/A
N/A
Rushing noise heard?
N/A
N/A
YES:
Go to Step 5.11
NO: Replace RT
5.11 Press PTT
RT SIG display reads 4 or more?
YES:
Go to Step 5.12
NO:
Replace RT
N/A
N/A
N/A
N/A
YES:
Go to STEP 6
NO:
Go to TS Chart 3
5.12
Set RT FCTN to SQ ON
N/A
Connect HS to RT AUD/DATA
N/A
Remove RF cable from RT ANT
N/A
Connect antenna to RT ANT
N/A
Press PTT count into HS
Sidetone heard in HS?
*
If unit SOP or tactical situation prohibits transmitting, use dummy load and realize that antenna cannot be
checked.
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