DESCRIPTION AND DATA
esses 75-MHz marker beacon signals modulated
with one of the three audiofrequencies (400 Hz,
a. Receiver. The R1963/ARN is a one piece
1300 Hz and 3000 Hz) and converts them into an
remotely located and controlled combination 40
output that drives a single marker beacon light
channel glideslope/marker beacon receiver. The
system with a total lamp load range from 40 to
receiver is used in conjunction with Radio Receiv-
200 milliamperes, 28 vdc.
ing Set AN/ARN-82 to provide a complete instru-
ment landing system.
b. Glideslope Receiver Section. The glideslope
d. Mount. The mount (fig. 1-3) is a lightweight
(GS) receiver section receives and processes glide-
mounting frame designed to provide vibration
slope signals over the frequency range of 329.15
isolation to the receiver through the use of four
to 335.00 MHz, 40 channels, with a channel spac-
vibration isolators. The mount provides for re-
ing of 150 kHz. The glideslope receiver section
mote-located mounting and contains a holddown
provides the outputs for the operation of Course
clamp to secure the receiver into place in the
Deviation Indicator ID1347C/ARN or equivalent.
mount. Flexible metal ground straps across each
of the resilient absorbers provide electrical ground
c. Marker Beacon Receiver Section. The marker
to the airframe.
beacon (MB) receiver section receives and proc-
Figure 1-3. Electrical equipment mounting base MT-4835/ARN.