ACR&Artex B406-4 - Manual (Page 28)

ACR ELECTRONICS, INC / ARTEX PRODUCTS
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
B406-4 (453-5004)
25-62-03
Page 28 of 87
JUN 20/13
(7) Aircraft communications transceivers are not capable of receiving 406 MHz transmissions;
therefore, the only methods of monitoring the ELT are:
(a) The cockpit remote switch panel light,
(b) The buzzer, or
(c) 121.5/243.0 MHz transmissions, which can be monitored using the aircraft
communications transceiver or an AM radio tuned to 121.5 MHz.
SUBTASK 25-62-03-870-002
B. Components
(1) The B406-4 ELT main assembly is housed in a high impact, fire resistant, polycarbonate plastic
case, which is enclosed in a protective mounting frame assembly made of similar material. See
Figure 1. B406-4 ELT and Mounting Frame Assembly.
NOTE: The ELT main assembly and its mounting frame assembly are capable of
withstanding extremely harsh environments and have been subjected to the rigorous
environmental testing required by COSPAS-SARSAT for certification.
Figure 1. B406-4 ELT and Mounting Frame Assembly
PROTECTIVE TOP
COVER ASSY
MOUNTING FRAME
CAP ASSY
ELT MAIN
ASSEMBLY
MOUNTING
TRAY ASSY
REMOTE
SWITCH
CONNECTOR
CONTROL
SWITCH
ANTENNA BNC
CONNECTOR
A
A ANTENNA TPS
CONNECTOR