INSTALLATION MANUAL OPERATION MANUAL
KANNAD 406 SURVIVAL
PAGE: 101
JUL 08/2013
SYSTEM FUNCTIONAL DESCRIPTION AND OPERATION
1. Transmitter
The KANNAD 406 SURVIVAL is designed to transmit on three frequencies
(121.5, 243 and 406 MHz).The two basic aeronautical emergency frequencies
(121.5 and 243 MHz ) are mainly used for homing in the final stages of the
rescue operations. The 406 MHz frequency is used by the COSPAS-SARSAT
satellites for precise pinpointing and identification of the aircraft in distress.
Once activated, the transmitter operates continuously on 121.5 and 243 MHz.
The output power is 100 mW on each frequency.
The modulation is an audio frequency sweeping downwards from 1420 Hz to
490 Hz with a repetition rate of 3 Hz.
During the 24 first hours of operation, a signal is transmitted on 406 MHz every
50 seconds to the COSPAS-SARSAT satellites. The output power on 406 MHz
is near 5W i.e. 50 times more powerful than the VHF signal.
2. Controls
The following controls are to be found on the ELT front panel:
1.
3-position switch ARM/OFF/ON;
2.
Visual indicator (red);
3.
DIN 12 connector for water switch sensor, dongle or programming
equipment connection;
4.
TNC connector for the antenna.
Figure 101: Front Panel
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