Description
Special Features
• Doppler radio direction finder
• 8.33 kHz channel spacing in the VHF air band available
• Extremely high rotation frequency for fast signal processing
• Compact antenna system for simple installation
• Antenna location independent of controller workstation
• No infrastructure required for remote operation
• Maintenance-friendly modular construction
• RS-232 interface to permit system integration
• Frequency range: Aviation band: 118.000 to 136.975 MHz
• Frequency range: Marine band: 156.000 to 174.000 MHz
• Various scanning modes
• Secound simultaneous channel optionally available
• Special antenna mast with test and maintenance functionality
Technical Data
| Frequency Range | ATC: 118 to 136.975 MHz VTS:156 to 174 MHz |
| Operating channels | ATC (25kHz): 760 ATC (8,33kHz): 2278 VTS: Channel 01 to 88 including Duplex channels |
| Channel spacing | 8.33 kHz / 25 kHz |
| Bearable modulation types | A3E, F3E, A3X (ELT-modulation) |
| Bearing accuracy | 2° RMS (±1° with bearing precision improvement option) |
| Bearing sensitivity | VHF Airband oder Marineband ≤ 5 µV/m / 2 µV/m typical at ±2° bearing fluctuation VHF Airband or Marineband including 2nd bearing channel ≤ 5 µV/m / 3 µV/m typical |
| Polarisation | Vertical |
| Polarisation error | ±1° (with field vector rotation up to 45°) |
| Cone of silence | approx. 35° referred to the vertical |
| Power supply | AC: 115 / 230 V ±15%; 47 to 63 Hz DC: 24 V -10% / +20%; automatic switch-over to DC voltage in case of AC mains failure |
| Power consumption | Controller unit: max. 15 VA Receiver unit: max. 10 VA (65 VA with heater) |
| Temperature ranges | Operating temperature: Antenna: -40° to +80°C Receiver unit: -40° to +60°C Controller unit: -20° to +55°CStorage temperature: -40° to +60°C |
| Interfaces | serial V.24 (RS232) parallel |
| Response time | Display: ≤ 400 MS RS-232 Output: ≤ 450 ms |
| Variant A) | Digital: 3 digits with 7-segment LED indicator Resolution: 1° Bearing reference: QDM, QDR, QUJ, QTE Updating rate: approx. one indication/s |
| Variant B) | Dual compass dial: 2 concentrical circles of LED points Resolution: 10° Bearing reference: QDRUpdating rate: Outer circle approx. one indication per secound Inner circle 47 indications per secound |
| Audio | Built-in speaker Headphone Output |
| Ground transmitter suppression | with external contact to ground |
| Lateral thrust due to wind | with constant wind speed 150 km/h approx. 135 N 180 km/h approx. 195 N (data including lightning rod and mast) |
| Dimensions and Weight Controller | 9″-desk-top model 3 UH, prepared for rack installation Dimensions (H x W x D): 132.5 x 448 x 370 mm Weight: 8.1kg |
| Dimensions and Weight Receiver unit | Non-metallic cabinet for wall mounting (IP 65) Dimensions (H x W x D): 250 x 340 x 285 mm Weight: 6.9kg |
| Dimensions and Weight Antenna | Dimensions (Diameter x H): 400 x 1120 mm with lightning rod and mast: 400 x 3400 mm Weight including antenna rods: 3.8kg |
| Methode of Bearing | Doppler-principle (3kHz rotational frequency) |
| Footnote 1) | …. |
Accessories
DF Commander
The main purpose of the “DF Commander” Software is to provide the remote control and monitoring of multiple DF-Channels and DF-Systems from a standard PC. This software allows the visualizing of the bearing data, such as bearing angle, signal level and frequency of an appropriate channel. The simple and convenient design of the “Bearing Page” and the possibility to adjust the orientation of the compass rose towards the tower window view makes the controller’s work very comfortable.
Furthermore the software provides the possibility to simultaneously monitor the status of all channels connected, which is also a helpful feature for the technical monitoring and maintaining of the DF-System.
DF Commander MK2 Software
The DF Commander MK2 software enables remote control and monitoring of radio direction finding systems. Besides displaying the direction finding results on different electronic charts, the software is able to calculate cross bearings on different frequencies. Soundings, cross bearing results and status information of radio direction finding systems are made available via an integrated server. Radio direction finding systems can also be set and controlled via the same server. Thus the software is to be understood as a DF service.
Antenna Model
The antenna model simulates the radio direction antenna. If the antenna model is connected to a signal generator, it delivers a signal like a DF antenna under perfect conditions. It simulates the signal angle 0 °; 90 °; 180 ° or 270 ° at its RF output;
The antenna model is a very useful device for the maintenance of the DF system.
Antenna mast with test and maintenance functions
The antenna mast is a girder mast which has been developed especially for the Doppler antenna system RTA 1300, which makes possible the turning and titling of the antenna for assembly and maintenance purposes. The mast will be delivered in disassembled condition. It has to be mounted and grounded after the assembly on a suitable base. The scope of delivery also includes a waterproof installation box, in which the receiver unit and remote data transmission can be located. All parts of the mast and the bolted connections are hot-dip galvanized or respectively made out of stainless steel.
Obstacle Light
The Obstacle Light is an optional safety accessory for the RT-1000 antenna mast. There exist two orderable variations: Single Obstacle Light and Double Obstacle Light. Both variations are intended for mounting on the top of the RT-1000 antenna mast.
Single Obstacle Light is a single-light-construction, which contains a light bulb in its housing and a corresponding mounting frame.
The Double Obstacle Light is a construction with two lights, which have an identical structure as the Single Obstacle Light. While the first lamp is in operation (operation lamp), the second lamp is in standby (standby lamp). In case of the failure of the operation lamp, the standby lamp will be automatically switched on. Furthermore the construction includes the IP 64 connection box and the corresponding mounting frame.
Antenna Mastflange
The antenna mast flange allows the installation of the RT-1000 antenna on any construction. CAD drawings for integration are available on request.
Additional Bearing Channel
The bearing system can be equipped with an additional receiver module and an additional controller. In this way, two workstations can work on different frequencies simultaneously with the system.
DF-Emulator Software
The “DF Emulator” is a software that emulates a bearing system on a Windows PC by playing a pre-recorded log file. In the simplest case, the DF emulator uses the serial COM port of the PC to transfer the data via RS232 to another PC or system that displays the bearing data.
This software is designed for projects like bearing data integration in radar displays or other map- and control displays and is intended to facilitate the work of integrators.
SNMP Modul
SNMP Module is an optional hardware that provides the remote error monitoring of RHOTHETA RT-1000 direction finder systems over the Simple Network Management Protocol.