L-854 Radio Control Equipment
96A0390 Rev.J
DISCLAIMER / WARRANTY
© ADB Airfield Solutions All Rights Reserved
6
2.2 Introduction
L-854 Radio Control Equipment
See Figure 1 L-854 Radio Control Equipment. This section describes the L-854 Type I Radio
Control system.
Figure 1:
L-854 Radio Control Equipment
The L-854 Type I Radio Control system is used for air-to-ground control of airport lighting
facilities. This equipment is manufactured to FAA specification AC 150/5345-49.
The L-854 Radio Control, consisting of an AM receiver and a Style A decoder, is a completely
self-contained system for controlling lighting functions on an airport from a remote radio
transmitter. The transmitter is usually the communications transmitter in an aircraft.
The Radio Control has two sets of three output relays operated by keying the transmitter in
specific sequences. Either set of relays can operates in either a cumulative fashion, or in
single output mode, where only one relay in the set is on at a time. To power these relays,
pilots can set their communications transmitters to the frequency to which the L-854 is tuned.
Three clicks of the mike button within five seconds powers the lighting system on the low (10)
brightness setting. Five clicks of the mike button within five seconds powers the lighting
system on the medium (30) brightness setting. Seven clicks of the mike button within five
seconds powers the lighting system on the high (100) brightness setting. The L-854 Radio
Control can be field programmed for three, five, and seven clicks to change the light settings.
The contacts of the relays in the L-854 are for control purposes only. They are rated 3 amps
(inductive) and are capable of operating the coils or power relays. They are not intended to
switch lighting-load currents.
