Onwa Marine Electronics KR-12X8 - Manual (Page 9)

KR-1238/1538 SPECIFICATION
ANTENNA UNIT
1. Radiator Slotted waveguide array
2. Radiator length 55 cm
3. Horizontal beamwidth 4
4. Vertical beamwidth 25
5. Sidelobe
Within
20 off mainlobe; less than -18 dB
Outside 20 off mainlobe; less than -23 dB
6. Polarization Horizontal
7. Antenna rotation speed 24 rpm (
2)
8. Wind resistance Relative wind speed 100 knots (51.5 m/s)
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TRANSCEIVER MODULE (contained in radome)
1. Transmitting tube MSF1421B or MAF1421B
2. Frequency 9410 MHz
30MHz
3. Peak output power 4kW nominal
4. Pulselength & pulse repetition rate
0.08
S, 2100 Hz (0.125, 0.25, 0.5, 0.75, 1.5nm)
0.3
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S, 1200 Hz (1.5, 2, 3nm)
0.8 S, 600 Hz (3, 4, 6, 8, 12, 16, 24, 36nm)
5. Warm up time: 1:30 minutes
6. Modulator: FET switching method
7. I.F.: 60MHz
8. Tuning: Automatic or manual
9. Receiver front end: MIC (Microwave IC)
10. Bandwidth:
Tx pulselength 0.3
S and 0.08 S: 25MHz
Tx pulselength 0.8 S: 3MHz
11. Duplexer: Circulator with diode limiter
2