The Rhotheta RT-300 VS is a professional automatic dual-band radio direction finder designed for marine applications.
It combines a communication direction finder for the marine VHF band with MOB and emergency direction-finding capability on the international 121.5 MHz distress frequency.
This product has a delivery time of 3 to 6 weeks from the date of order.
Rhotheta positions the RT-300 as a modern alternative and replacement for the Simrad Taiyo TD-L1550A.
The RT-300 VS covers the VHF air/emergency band from 118.800 to 124.000 MHz and the marine VHF band from approximately 156.000 to 162.025 MHz.
The system can automatically monitor the international 121.500 MHz emergency frequency while operating on the marine radio band.
Key features
• Professional dual-band radio direction finder
• Marine VHF direction finding
• VHF air/emergency-band reception
• Automatic 121.5 MHz monitoring
• All 88 marine VHF channels
• Fully automatic operation
• High receiver sensitivity
• Bearing accuracy better than ±5° RMS
• 1° digital bearing resolution
• 36-LED bearing circle
• 0.5° NMEA bearing output
• Relative, magnetic or true bearing
• Doppler direction-finding principle
• NMEA / RS-422
• RS-232
• RS-485
• Alarm relay
• External speaker output
• IP67 antenna unit
• IP67 display/control unit
• 12-28 V DC operation
• Professional SAR and MOB capability
• Modern alternative to the Simrad Taiyo TD-L1550A
Product specifications
• Brand: Rhotheta
• Manufacturer: RHOTHETA Elektronik GmbH
• Model: RT-300 VS
• Series: RT-300
• Product type: dual-band radio direction finder
• Application: marine communications, SAR, MOB, navigation and radio monitoring
• Bearing method: Doppler principle
• Doppler rotational frequency: 3 kHz
• Bearing accuracy: better than ±5° RMS
• Internal resolution: 0.5°
• Digital display resolution: 1°
• LED-circle resolution: 10°
• Serial NMEA resolution: 0.5°
• Bearing reference: relative, magnetic or true north
• VHF air band: 118.800-124.000 MHz
• International distress frequency: 121.500 MHz
• Marine VHF band: approximately 156.000-162.025 MHz
• Marine channels: 1-88
• Frequency step: 25 kHz
• Modulation: A3E, F3E and A3X
• Supply voltage: 12-28 V DC
• Display: 98 × 32 pixel graphic LC display
• Keys: 13 illuminated keys
• Bearing indicator: 36-LED circle
• NMEA: yes
• RS-232: yes
• RS-485: yes
• Audio output: up to 1.5 W at 4 ohms
• Display Control Unit weight: approximately 700 g
• Antenna Unit weight: approximately 1.4 kg
• Display Control Unit protection: IP67
• Antenna Unit protection: IP67
• Operating temperature: approximately -20 to +60 °C
• Storage temperature: approximately -50 to +70 °C
Complete system
• Rhotheta RT-300 VS Display Control Unit
• Rhotheta RT-300 Antenna Unit
• Antenna rods
• Fused power cable
• Serial interconnection cable
• Cable gland / strain-relief components
• Display Control Unit mounting hardware
• System connectors
• Spare fuse
• Installation documentation
• User manual
Replacement for Taiyo TD-L1550A
Suitable as a modern alternative to:
• Taiyo TD-L1550
• Taiyo TD-L1550A
• Simrad Taiyo TD-L1550
• Simrad Taiyo TD-L1550A
