INSTALLATION MANUAL OPERATION MANUAL INSPECTION LOG
KANNAD 406 AF / AF-H / AF (6D)
PAGE: 304
JUN 23/2008
4. 406 and 121.5 MHz transmission test
A. ELT-Antenna link
ELT -Antenna link can be checked by testing VSWR.
KANNAD recommends the use of SWR3000 VSWR meter manufactured by
PROCOM.
Refer to SWR3000 manufacturer’s user manual for a VSWR measurement.
B. 406 MHz
This test must be carried out with a COSPAS-SARSAT decoder.
• Perform self-test (Press RESET and TEST on the RCP or switch ELT from
OFF to ARM).
• Check with the COSPAS-SARSAT decoder that, except for the 5th and the
6th digits, the decoded message is identical to the programmed message.
NOTE:The message transmitted during self-test sequence always begins with
FF FE D0 whereas a programmed message begins with FF FE 2F.
Example of message programmed in ELT:
FF FE 2F 53 C3 24 97 38 0B A6 0F D0 F5 20
Example of same message decoded by SARTECH ARG5410:
FF FE D0 53 C3 24 97 38 0B A6 0F D0 F5 20
C. 121.5 MHz
IMPORTANT: this test must only be carried out between H and H+5
minutes. Do not exceed 30 seconds of transmission.
This test must be carried out with a VHF receiver.
• Tune VHF receiver to 121.5 MHz;
• Start transmission:
- either on ELT: ON position;
- or on the RCP: ON position (the ELT shall be in the ARM position);
• Listen to the 121.5 MHz "sweep tone";
• Stop transmission:
- either on ELT: OFF or ARM position;
- or on the Remote Control Panel: press TEST and RESET (the ELT shall
be in the ARM position).
