RHOTHETA Elektronik
RT-400
Mobile Wideband Direction Finder
The RT-400 is a portable direction finder, which is designed for search and rescue operations (SAR), law enforcement and localizing of radio interference sources. Due to its wideband, the system allows homing to any radio transmitter with a frequency between 118 and 470 MHz inclusively all emergency frequencies such as 121.5, 243 and 406 MHz (COSPAS/SARSAT). The DF system uses a tablet with a compass and GPS.
The “DF-Scout” software allows displaying and saving bearing lines on the moving map as well as localizing beacons by triangulation. In case of COSPAS/SARSAT decoding, the beacon position, true bearing and the distance to target are also indicated directly on the map. Homing COSPAS/SARSAT beacons becomes easier when the SAR Scan algorithm is running, which detects the correct COSPAS/SARSAT frequency and scans for 121.5 MHz between COSPAS/SARSAT pulses. The antenna is mountable on vehicles and can be carried by persons. This allows searching from the vehicle until the terrain becomes impassable and proceeding by foot with the same antenna. Due to the light weight, comfortable frame and the wireless antenna / tablet communication, the handling becomes very easy. The stable and water protected system can be used at rough outdoor conditions.
| DF Method: | Doppler |
|---|---|
| Bearing Accuracy: | 5° RMS1 |
| Frequency Range: | VHF Air Band 118.000 - 124.000 MHz 118.000 - 136.992 MHz (Option) Marine Band 154.000 - 163.000 MHz 137.000 - 224.995 MHz (Option) UHF Air Band 240.000 - 246.000 MHz 225.000 - 399.975 MHz (Option) COSPAS/SARSAT 400.000 - 406.092 MHz all 19 COSPAS/SARSAT Channels UHF FM-Band 406.100 - 410.000 MHz 406.100 - 470.000 MHz (Option) |
| Receive Frequency Tuning Steps: | VHF Air Band 8.33 kHz Marine Band 5 kHz UHF Air Band 25 kHz COSPAS/SARSAT 8.33 kHz UHF FM-Band 5 kHz |
| Bearing Sensitivity: | VHF Air Band ±5° bearing fluctuation ≤ 4μV/m / 2,5μV/m typical Marine Band ±5° bearing fluctuation ≤ 3μV/m / 2μV/m typical UHF Air Band ±5° bearing fluctuation ≤ 6μV/m / 4μV/m typical COSPAS/SARSAT ±5° bearing fluctuation ≤ 6μV/m / 4μV/m typical UHF FM-Band ±5° bearing fluctuation ≤ 6μV/m / 4μV/m typical |
| Response Time2 | ≤ 50 ms typical |
| Power Supply Antenna Unit: | Input Voltage 12…30 V DC |
| Power Pack Recommended Battery Types: |
Accumulator Batteries 12 x 1.2 V NiMH, 4500 mAh Alcaline Batteries 12 x 1.5 V Type C |
| Operational Time (Antenna Unit): | with 12 x 1.2V NiMH, 4500 mAh > 8 h |
| Data Interface: | Tablet - Antenna Unit WiFi |
| Carrying Frame: | Weight: 5.5 kg |
| Antenna Unit: | Weight: 2.3 kg Operating temperature: - 40° C to + 60° C Storage temperature: - 55° C to + 80° C Ingress protection: IP 67 Dimensions: Ø 270 mm x 185 mm |
| Battery Pack: | Weight: 1.8 kg Ingress protection: IP 67 |
| Car Kit: | Weight: 6.3 kg |
| Complete System3 | Weight: 9.34 kg Operating temperature: - 20° C to + 60° C Storage temperature: - 30° C to + 80° C Ingress protection: see tablet spec. |
RT-400
Accessories
ALGIZ RT8 (Handheld)
OS: Android 9.0, Screen size: 8 Zoll, Screen resolution: 1920 x 1200 Pixel, Operating Temperature: -20°C to 60°C, IP67
RUGGON SOL PA501
OS: Android 9.0, Screen size: 10.1 Zoll, Screen resolution: 1920 x 1200 Pixel, Operating Temperature: -20°C bis 60°C, IP65
Car mounting Kit
The Car mounting kit allows to attach the RT-400 to nearly any common roof rack. The range for rescue missions expands tremendously by this feature.
RT-400
References
RT-400
