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 TM 55-1905-219-14-2
OPERATING INSTRUCTIONS
IFF SYSTEM-AN/APX-72
These instructions are not intended to replace Instruction Books, but to provide ready reference to standard operating
procedure. Read your Instruction Book.
Power distribution panel is located in the Pilot House.
24 VDC DIST. PANEL.
I STARTING THE EQUIPMENT
STEP 1
Set MASTER CONTROL to OFF.
STEP 2
Set IDENT-MIC SWITCH to OUT.
STEP 3
Set M-1, M-2, M-3/A, M-C and MODE 4 SWITCHES to OUT.
STEP 4
Set AUDIO-LIGHT SWITCH to OUT.
STEP 5
Set RAD TEST-MON SWITCH to OUT.
STEP 6
Set MODE 1 and MODE 3/A CODE SELECT SWITCHES to OPERATIONAL CODE REQUIRED.
STEP 7
Set MODE 4 CODE SWITCH to OPERATIONAL CODE REQUIRED.
STEP 8
Set MODE 2A CODE SELECT SWITCH on RT-859 to OPERATIONAL CODE REQUIRED.
STEP 9
Turn POWER SWITCH on 24VDC Dist. Panel ON.
II OPERATING PROCEDURES
STEP 1
Set MASTER CONTROL to STBY- Allow one minute to warm up.
STEP 2
Set M-1, M-2, M-3/A, M-C and MODE 4 ENABLE SWITCHES to ON (as required)
STEP 3
Set IDENT-MIC SWITCH to OUT.
STEP 4
STEP 5
Set RAD TEST-MON SWITCH to MON.
STEP 6
Set MASTER CONTROL to LOW or NORMAL (as required)
STEP 7
Set RAD TEST-MON SWITCH to OUT.
2-676
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