Onwa KR-1338, Service Manual

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1.3 Specifications
SCANNER UNIT
KR- 1338
KR-1668
Radiator Type
Radiator Length
Horizontal Beamwidth
Vertical Beamwidth
Slotted Waveguide Array
56cm
120 cm
4 1.9
20 22
Sidelobe
Attenuation
Within 20
of mainlobe
Outside 20
of mainlobe
Polarization
Antenna Rotation
Scanner Housing Stureruct
Compass Safe
Distance
-18 dB or less -24 dB or less
-23 dB or less -30 dB or less
Horizontal
24 rpm nominal
Radome
Open nominal
Standard
Steering
0.9 m
0.7 m
1.0 m
0.74 m
TRANCEIVER
KR-1338 KR-1668
MAF1421/MAF1422B
KR-1338-SME-3
Magnetron
Frequency &Modulation
9410 M z 30M z,P0N H H
Peak Output Power
4 kW nominal
6 kW nominal
Pulse Length &
Pulse Repetition
Rate
0.3
Modulator
Duplexer
Receiver Front End
Tuning
Intermediate Frequency
Bandwidth
FET Switch
Circulator with diode limiter
MIC(Microwave IC)
Automatic or Manual
60 M z H
25 M z(0.08 H
Short Ranges:0.25 nm -1.5 nm)
S, approx 2100 Hz
0.08
S, approx 1200 Hz(Middle Ranges: 1.5nm - 3nm)
0.8
S, approx 600 Hz(Long Ranges: 3 nm and above)
S, 0.3 S), 3 M z (0.8
H
S)
KR-1338-SME-4
MAF1421B/MSF1421
3