RT-600 Multi-Band Direction Finder System for Airborne SAR of RHOTHETA

Special Features

• Universal SAR direction finder: VHF aviation and marine band, UHF aviation band, Cospas-Sarsat frequency
• High reception sensitivity to permit detection of extremely weak or distant signals
• High direction finder accuracy, precise and stable display
• Optimized for use on board aircraft: compact display and control unit with LCD display

Technical Data

Method of bearing	Doppler-principle (3kHz rotational frequency)
Bearing accuracy	≤ 5° (RMS)
Internal resolution	1°
Frequency stability	±2.0 ppm
Receiving channels	8 (four of them are free adjustable)
Frequency range SAR	VHF Airband : 118.000 to 124.000 MHz VHF Marine Band: 154.000 to 163.000 MHz UHF Air Band: 240.000 to 246.000 MHz COSPAS-SARSAT: 400.000 to 406.092 MHz UHF FM-Band: 406.100 to 410.000 MHz
Scanning mode	When receiving Cospas/Sarsat signals, the emergency frequencies 121,500 MHz and 243,000 MHz may be surveilled simultaneously.
Cospas/Sarsat analysis	Reception and analysis/decoding of Cospas/Sarsat data signal (112 resp. 144 bit, 400 baud, biphase L-phase modulated, with Bose-Chaudhuri-Hocquenghem error test / specified according Cospas/Sarsat C/S T.001 October 1999)
Bearable modulation types	A3E, F3E, A3X (ELT-modulation); bearing mostly independent of modulation
Polarisation	Vertical
Error of polarisation	≤ 5° at 60° field vector rotation
Garbling cone	app. 30° to the vertical
Response Time	≤ 50 ms typ
LC-graphic display	128x64 dots, supertwist /transflective, extended range of temperature, dark-blue display on yellow-green background, lit up. Free adjustable (exponentiell) dimming of brightness
Supply voltage range	12 V to 35 V DC
Current consumption	LCD-background lighting Off: max. 350 mA (12 V DC) / 200 mA (24 V DC) LCD-background lighting 100%: max. 600 mA (12 V DC) / 300 mA (24 V DC)
Interface	Remote Control: RS-232 Legend Dimming: Analogue 1,5 to 28 V Night Status Line: Discrete, low-active NVG Status Line: Discrete, low-active ARINC 429: on request
Serial interface RS232	(9600 baud, 8 databits, 1 stoppbit, no parity)
Operating temperature	DCU: -20°to +55°C / Short time +60°C AU: -40°to +60°C
Protection system	DCU: non AU: IP 67
Weights	DCU: 250 g AU: 2000 g
Dimensions	DCU: 82mm x 82mm x 43mm (width x height x depth) AU: ∅270mm x 185mm
Frequency range LE	VHF Airband: 118.000 to 124.000 MHz VHF Marine Band: 154.000 to 163.000 MHz LoJack: 164.000 to 174.000 MHz ETS: 216.000 to 220.000 MHz COSPAS-SARSAT: 400.000 to 406.092 MHz
Bearing sensitivity VHF Air Band	≤ 6 µV/m / 4 µV/m typical at ±5° bearing fluctuation
Bearing sensitivity VHF Marine Band	≤ 5 µV/m / 2,5 µV/m typisch at ±5° bearing fluctuation
Bearing sensitivity LoJack	≤ 5 µV/m / 2 µV/m typisch at ±5° bearing fluctuation
Bearing sensitivity ETS	≤ 6 µV/m / 4 µV/m typical at ±5° bearing fluctuation
Bearing sensitivity COSPAS-SARSAT	≤ 15 µV/m / 8 µV/m typical at ±5° bearing fluctuation
Bearing sensitivity UHF FM-Band	≤ 15 µV/m / 6 µV/m typical
Storage temperature	DCU: -30°C to +80°C AU: -55°C to +80°C
Bearing sensitivity UHF Airband	≤ 10 µV/m / 6 µV/m typical at ±5° bearing fluctuation

Accessories

RAMP Tester

The RT-600 ramp tester is a measuring device that enables a rapid functional test of the RT-600. It consists of the antenna measurement device and an optional RF signal generator, which allows the testing of arbitrary frequencies within the RT-600 frequency range. The ramp tester can be easily attached to the RT-600 AU and allows a functional test in 45 ° increments. It offers a comprehensive performance test of the DF system mounted on the aircraft, including DF accuracy, bearing sensitivity and audiomodulation test.

Frequency options RT-600 A

F1 VHF-Airband: 118.000 to 136.992 MHz
F2 VHF-Marineband: 137.000 to 224.995 MHz
F3 UHF-Airband: 225.000 to 399.975 MHz
F4 UHF-FM Band: 406.100 to 470.000 MHz

The Optional Frequency extensions can be ordered seperatly to extend the frequency range of each system individually.

NVIS Display

The NVIS display variant of the RT-600 is designed for night use and meets the color spectrum requirements that are required for the use of night vision equipment.