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Page Title:
Control, Transponder Set C6280(P)/APX |
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 NAVSHIPS 0967-217-4010
TM 11-5895-490-20
a. Control, Transponder Set C6280(P)/APX. (cont)
Function
Position
Control
Disables the reply to mode 2 interrogations.
OUT
Enables the TS-1843/APX to locally interro-
TEST
gate the RT-859/APX-72 in mode 2,
Enables the RT-859/APX-72 to reply to
ON
M-3/A switch
mode 3/A interrogations.
Disables the reply to mode 3/A interrogations.
OUT
Enables the TS-1843/APX to locally interro-
TEST
gate the RT-859/APX-72 in mode 3/A.
Enables the RT-859/APX-72 to reply to
ON
M-C switch
mode C interrogations.
Disables the reply to mode C interrogations.
OUT
TEST
Enables the TS-1843/APX to locally interro-
gate the RT-859/APX-72 in mode C.
Selects and indicates the mode 1 two-digit reply
MODE 1 code select
switches
code number.
MODE 3/A code select
Selects and indicates the mode 3/A four-digit
switches
reply code number.
TEST indicator
Lights when the RT-859/APX-72 responds
properly to a mode 1,2, 3/A, or C test, or
when depressed.
MODE 4 switch
ON
Enables the RT-859/APX-72 to reply to
mode 4 interrogations.
OUT
Disables the reply to mode 4 interrogations.
CODE control
Functions of this switch are operationally
classified.
AUDIO-LIGHT switch
AUDIO
Enables aural and REPLY light monitoring of
valid mode 4 interrogations and replies.
LIGHT
Enables REPLY light only monitoring of valid
mode 4 interrogations and replies.
OUT
Disables aural and REPLY light monitoring
of valid mode 4 interrogations and replies.
REPLY indicator
Lights when valid mode 4 replies are present,
or when depressed.
2-2
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