Manual

USER MANUAL
1-2
21464-5
NORMARC 7050
MARKER BEACON
GENERAL INFORMATION ©1999 Navia Aviation AS
Figure 1-2 Marker beacon block diagram
1.1.3 Marker Beacons Description
The marker beacons are located vertically beneath the localizer course line at distance 150m
(inner marker), 1km (middle marker) and 7km (outer marker) from the runway threshold.
The beacons radiate a 75MHz radio signal with an audio Morse code. The Morse code and
modulation frequency differ for the outer, middle and inner marker. Outer marker transmits
dash code 400Hz, middle marker transmits dash dot code 1300Hz and inner marker dot code
3000Hz.
1.2 Product Type Numbers
The Normarc product numbering system is based on the following three levels:
•System
• Assembly
• Module
Systems have type numbers starting with NM, for example NM7050. Systems consist of
assemblies, modules and parts.
Assemblies have type numbers consisting of three letters, a three- or four- digit number and a
letter, for example CAA 1370A. CAA is an abbreviation of CA
binet Assembly, 1370 is a run-
ning number, and the last letter is the variant designator. Assemblies can consist of assem-
blies, modules and parts.
REMOTE
CONTROL
UNIT
SLAVE
PANEL
RMM
SYSTEM
TRANSMITTERS
AND
MODULATORS
24V
BATTERY
MONITOR(S)
POWER
SUPPLY(S)
MAINS INPUT
220V/110V AC
BEACON
ANTENNA
MARKER
BEACON
CABINET
DISTRIBUTION
NETWORK
MONITOR
NETWORK
RF OUT
RF IN
DUAL ANTENNA SYSTEM
HBK779/1