Furuno FR-8051 manual Specifications, Antenna Unit, Transceiver Module

SPECIFICATIONS

Antenna Unit

Type

Slotted waveguide array

Polarization

Horizontal

Length

4 ft(XN2)

6.5 ft(XN3)

6.5 ft (XN3A)

8 ft(XN4A)

Beamwidth

1.8 x 25°

1.2 x 25°

1.23 x 20°

0.9 x 20°

Rotation speed

24 rpm (36 rpm optional)

Transceiver Module

Frequency

9410 MHz ± 30 MHz (X-band)

Peak output power

FR- 8051: 6 kW

FR- 8111: 10 kW

FR- 8251: 25 kW

Transmitting tube

FR- 8051: E3560, MG5232

FR- 8111: E3566 or MG5241

FR- 8251: 9M752 or M5187F

Pulselength (PL) & Pulse Repetition Rate (PRR)

Range (nautical miles)

PL

PRR

0.125

0.25

0.5

0.75

1.5

3

6

12

24

48

72

96

SP

2100Hz

0.08 microseconds

MP1

2100Hz

0.3 microseconds

MP2

1200Hz

0.6 microseconds

LP

600Hz*

1.2 microseconds

* 500 Hz on 72, 96 nm range

500 Hz when 2nd trace echo rejection is off (MP1, MP2, LP only)

Modulator

FR-8051/8111: FET switching method

FR-8251: Line Pulse

I/F amplifier

Logarithmic, IF 60 MHz

Bandwidth: 25MHz (0.08 μs),

2.5 MHz (0.3 μs, 0.6 μs, 1.2 μs)

Tuning

Automatic or manual

Receiver front end

MIC (Microwave IC)

Duplexer

Circulator with diode limiter

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