Elta ADT 406 AF, User Handbook Manual

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Page 17
Apr 17/03
(c)Radio-electrical characteristics
1 406 MHz satellite transmitter
– Frequency : 406.028 MHz,
– transmitter power
: 5 W,
– modulation : "L" two-phase,
– transmission recurrence : 50 s,
– transmission duration : 440 or 520 ms.
2 Associated homing transmitter
– Frequency : 121.5 MHz/243 Mhz or 121.5 MHz (selectable),
– 121.5 MHz transmitter power
: 140 mW,
– 243 MHz transmitter power : 140 mW,
– modulation
: AM (3K20A3X type) from, 1600 Hz to 300 Hz,
up to four periods per second,
– antenna gain : > 1 dBi.
(d)Environment characteristics
– Operating temperatures : -20
°
C to +55
°
C,
– storage temperatures : -55
°
C to +85
°
C.
(e)Miscellaneous characteristics
– Automatic activation level in accordance with EUROCAE ED-62 (internal G-switch).
Activation direction is selectable (4 possibe directions),
– color : orange in conformity with the international distress signal,
– self-test : transmission of one burst modulated with inverted frame synchronization
and 5s transmission of 121.5 MHz ,
automation to off position (on remote control panel),
– any COSPAS/SARSAT protocol available,
.
ELT S/N
. A/C operator designator and S/N
.
A/C 24 bits address
.
A/C nationality and registration marking (recommended)
.
Test
– any country code available,
– can operate in short or long C/S message.
For long message, location data (from on board GPS as exemple) is received from A/C data bus
through an interface module, P/N 01N6593(x)
– C/S identification stored in a transferable module to ease maintenance on ELT,
– dual antenna access
Primary for external antenna and back up antenna in case of failure detection on primary access.