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TM 11-5820-890-20-2
5-8
5.2.
OPERATIONAL CHECK. Continued
STEP 5. TRANSMITTER CHECKS:*
STEPS TO PERFORM
CHECKS TO MAKE
ACTIONS TO TAKE
5.1
Disconnect RF cable from RT ANT
Connect test set cable from
test set RADIO to RT ANT.
Connect vehicular antenna cable
to test set ANT
Set test set MODE to FWD PWR
Set RT:
CHAN to 1
MODE to SC
N/A
N/A
N/A
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
Push To Test
Test set reads 2W or greater.
YES: Go to Step 5.3
NO:
Go to TS Chart 9
5.3
Set test set MODE to RVS PWR
Press PTT and test set
Push To Test
N/A
Test set reads no more than 1/3**
of FWD PWR?
N/A
YES: Go to Step 5.4
NO:
Go to TS Chart 9
5.4
Press PTT
RT SIG display reads 4 or more?
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
N/A
Test set reads no more than 1/3**
of FWD PWR?
N/A
YES: Go to Step 5.6
NO:
Go to TS Chart 9
5.6
Set RT CHAN to 3
Repeat FWD and RVS PWR check
for CHAN 3
N/A
Test set reads no more than 1/3**
of FWD PWR?
N/A
YES: Go to Step 5.7
NO:
Go to TS Chart 9
5.7
Set RT to CHAN 1
Press PTT, count into HS
N/A
Sidetone heard?
N/A
YES: Go to Step 5.8
NO:
Got to TS Chart 10
5.8
Set test set MODE to FREQ
Press PTT and test set
Push To Test
N/A
Test set reads 40998 to 41002?
N/A
YES: Go to Step 5.9
NO:
Replace RT
5.9
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 5.10
NO:
Replace RT
5.10 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 5.11
NO:
Replace RT
5.11 Set RT FCTN to RXMT
Connect HS to RT RXMT
Listen at HS
N/A
N/A
Rushing noise heard at HS?
N/A
N/A
YES: Go to Step 5.12
NO:
Replace RT
5.12 Press PTT
SIG display reads 4 or more?
YES: Go to STEP 6
NO:
Replace RT
* If unit SOP or tactical situation prohibits transmitting, use dummy load realize that antenna cannot be
checked.
** If radio is used for data transmission, use 1/4 rather than 1/3 for these checks
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