ACR&Artex G406-4 ELT - Manual (Page 69)

25-62-21
Page 69 of 86
JUL 31/12
ACR ELECTRONICS, INC / ARTEX PRODUCTS
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
G406-4 (453-5012)
SUBTASK 25-62-21-450-004
E. Wiring Installation
(1) Route the remote switch harness wire bundle and breakout wiring through the airframe.
(2) Route the two antenna coax cables through the airframe.
NOTE: Longer coax cables, up to 20 feet (6.1 m), may be fabricated if the cables provided
are too short. Use RG-142 or RG-400 coax cable.
(3) Support the wiring and coax cables by clamping or other suitable means, such that the wiring
and cables are properly supported and protected from chaffing and strain. Refer to the aircraft
manufacturer’s written instructions or as described in AC 43.13-1, Chapter 11, § 9 through 12,
as applicable.
SUBTASK 25-62-21-450-005
F. Antenna Connections
(1) Connect the two coax cables to the antenna, making sure the cables are routed and supported
such that there is no tensile load (i.e., strain) on the connections.
SUBTASK 25-62-21-450-006
G. Cockpit Remote Switch Power Connection
(1) Connect the remote switch power wire. If the wire is spliced, fabricate the splice in a manner
acceptable to the aircraft manufacturer or as described in AC 43.13-1, § 13.
NOTE: The power source provides energy for the remote switch assembly LED, but has no
effect on switch functions, as the switch will control the ELT with or without power.
NOTE: Power should be connected directly to the battery using a 1-amp in-line fuse or
circuit breaker; or an alternate un-switched source, such as the aircraft clock
circuitry.
SUBTASK 25-62-21-450-007
H. Remote Switch Alternate Power Source
(1) If the aircraft does not have an electrical system (i.e., no battery), it is permissible to fabricate
a substitute power source for the LED, as follows:
(a) Connect three suitably supported 9V alkaline batteries together in series.
(b) Connect the positive (+) side to Pin 3 of the remote switch connector.
(c) Connect the negative (–) side to aircraft ground, such that the circuit is complete.
(d) Check the battery voltage periodically and replace the batteries every two years.
(e) Note the alteration in the aircraft logbook.