8
Table: Signalling tone description
Parameter Type
Standard
Sy
nc
Timing
diagram
Tone0
1000Hz
Continuous P
FEER
Toxic Gas
Tone1 800/1000Hz@
0.25s
Alternating
Tone2
500/1200Hz@ 0.3Hz 0.5s Slow
Whoop
a
a
a
a
Tone3 800/1000Hz@
1Hz
Sweeping
a
a
a
a
Tone4 2400/2900@
7Hz
Sweeping
Tone5 2400/2900@
1Hz
Sweeping
a
a
a
a
Tone6 500/1200Hz@
0.3Hz
Sweeping
a
a
a
a
Tone7 1200/500Hz@
1Hz
Sweeping
D
IN
/
P
FEER
P.T.A.P.
a
a
a
a
Tone8 2400/2900@
2Hz
Alternating
a
a
a
a
Tone9 1000Hz@
1Hz
Intermittent
a
a
a
a
ToneA 800/1000Hz@
0.875Hz Alternating
a
a
a
a
ToneB 544Hz(100ms)/440Hz(400
ms)
Alternating NF S-32-001
a
a
a
a
ToneC 1400Hz(1s)/1600Hz(0.5s)
Sweeping
NFC48-265
a
a
a
a
ToneD 660Hz@
3.33Hz
Intermittent
ToneE 660Hz/(1.8s),1.8s
off
Intermittent
a
a
a
a
ToneF 660Hz
Continuous
Jumper
in position LS of jumper field X1
Tone10 2400Hz@
1Hz
Intermittent
a
a
a
a
Tone11 800Hz(0.25s),
1s
off
Intermittent
a
a
a
a
Tone12 800Hz
Continuous
Tone13 2400Hz
Continuous
Tone14 554/440Hz@
1Hz
Alternating
a
a
a
a
Tone15 544Hz@
0.875Hz
Intermittent
a
a
a
a
Tone16 800Hz@
2Hz
Intermittent
a
a
a
a
Tone17 800/1000Hz@
50Hz
Sweeping
Tone18 2400/2900Hz@
50Hz
Sweeping
Tone19 Mute
Tone1A 554Hz
Continuous
Tone1B 440Hz
Continuous
Tone1C 800/1000Hz@
7Hz
Sweeping
Tone1D 420Hz 1.6Hz
Intermittent Australian Alert
a
a
a
a
Tone1E 1200/500Hz@
1Hz
Sweeping D
IN
/ P
FEER
P.T.A.P.
a
a
a
a
Tone1F 500/1200Hz@
3.75s
0.25s
Slow
Whoop
Australian Evac.
a
a
a
a
Jumper
in position US of jumper fiel
d X1