Radome Antenna - AUTOHELM ST50 PLUS Operation And Installation Manual

ST50 PLUS RADAR Operation and Installation Handbook
l - 8
Other Optional Features:
Control Keys
19)
(All push bottons)
inputs:
20) Rear Panel Connectors:
Inter-unit (Ant.1
Power DC input/
N M E A
Cursor, VRM, EBL, Interference Rejection,
Target Expansion, Target Alarms, LAT/
LONG or TD Readouts, Waypoint t/L, Off
Center/Zoom, Timed Transmit, Target
trails, Built in Simulator, Hold Mode, Auto
Gain, Auto STC, Auto FTC, Auto Tune
Raychart, Seatalk
RANGE KEYS UP/DOWN
UP/DOWN
UP/DOWN
RAIN KEYS
SEA KEYS
GAIN KEYS UP/DOWN
HOLD KEY OFF/ON
OFF/ON
MENU KEY
OFF/ON
GUARD KEY
EBL KEY OFF/ON
OFF/ON
VRM KEY
CURSOR KEY OFF/ON
OFF/ON
OFF/ON
OFF/ON
A, v', 4, b, DIRECTION KEYS
NMEA0183, must include GLL, GTD, VTG,
BWC, or RMA and RMB, or RMB and RMC
sentences for full function displays and
capabilities.
Magnetic Sensor NMEA 0183 HDM, HDT,
VHW or HSC, data sentences.
Wind Direction, Wind Velocity, Depth, SOG/
COG, MTW, Position, Waypoint, Tide, etc.
4-pin
i-pin
B-pin (option)
Section 1. Introduction

1.4.3 Radome Antenna

Dimensions:
Weight:
Polarization:
Beam width:
Sidelobes:
Rotation:
Drive motor input voltage:
Transmitter frequency:
Peak power output:
repetition frequency:
15) IF amplifier:
Diameter of radome 450 mm (17.7')
Height mm (8.9')
227
Front to end
Base Dimensions
mm (10.6")
270
Width
mm (7.9')
200
Approx. kg (12.1 Ibs)
5.5
Horizontal
Horizontal 6' nominal
Vertical 25' nominal
-21 dB or greater (within +lO')
Approx. 24 RPM
VDC
2.0
Magnetron (RMC-21
Hz
(0.125, 0.25, 0.5, 0.075 nm)
0.3 p/l200
Hz (3,6, 12, 16 nm)
0.8 p/600
Solidstate modulator driving magnetron
T-junction with diode limiter
MIC front end
Center frequency MHz
60
MHz
Bandwidth
7
Less than 10 dB
Linear