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Help CenterWiNRADiO WD-7200 HF/VHF/UHF Interferometer-based Correlative Radio Direction Finder
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WiNRADiO WD-7200 HF/VHF/UHF Interferometer-based Correlative Radio Direction Finder
Features
• Frequency range 100 MHz to 2000 MHz
• High accuracy circular radome antenna
• Rugged, low visibility antenna housing
• Correlative interferometer technology
• Rapid and simple deployment
• High sensitivity
• Effective against short duration signals
• Effective against digital signals such as DMR/Tetra
• Typical accuracy better than 2 degrees SD
• Common reference providing receiver coherency
• Uses wideband digital DDC based receivers
• Low power consumption
• Additional antennas to cover 2-100MHz
• Highly portable
Delivering a cost-effective yet robust and accurate DF solution for government, military, and law enforcement
applications, the WiNRADiO WD-7200 direction finding system employs a sophisticated quasi-coherent multi
channel interferometer-based method, combined with statistical signal processing.
The system is small, lightweight and ruggedized. It is suitable for stationary, vehicle-mounted and portable
deployment. It delivers unparalleled flexibility due to its SDR architecture. Excellent accuracy and sensitivity
ensure it is capable of filling not only the role of a direction finding system, but also that of a highly capable
VHF/UHF COMINT intercept receiver system.
Each WD-7200 system comprises of three main parts: antenna radome, twin coherent receivers, and processing computer.
The radome uses eight sense antennas in a circular array mounted within a weatherproof fiberglass housing. The sense antennas are specially designed dipoles. Also inside the radome is an accurate magneto resistive digital compass, ensuring that the antenna is referenced correctly to magnetic north at all times.
The receivers are a quasi-coherent variant of the well-proven WR-G39DDC SDR. The system is housed in a
rugged portable pelicase-style enclosure.
The WD-7200 exploits a special technique of phase equalization that is both passive and dynamic, ensuring
instantaneous optimum performance at all times.
A high-performance integrated laptop computer is used for interfacing with the system and for processing and analyzing received signals.
The WD-7200 can be deployed and working in a few minutes. The system’s versatility and relatively
lightweight design means it is ideal for static, vehiclemounted or dismounted deployment.
Combining modular hardware design with innovative software, the WiNRADiO WD-7200 VHF/UHF direction
finding system delivers unprecedented flexibility and performance.
Hardware
The WiNRADiO WD-7200 DF system breaks new ground with its state-of-the-art capability and
components. It uses a specially designed quasicoherent version of the WR-G39DDC receiver together
with an eight-element circular radome antenna.
The receiver system is mounted within a portable enclosure and can be powered either from AC mains or
from automotive DC employing optional converters. This allows for stationary and transportable deployment.
In deployments where portability is not a major requirement, the system may be operated with an additional (optional) monitor. This enables DF operations to be performed on one screen, with normal receiver operation via the additional monitor.
Options
The system can be extended to include the following hardware and software options:
• AX320D Watson-Watt HF/VHF small general purpose antenna suitable for operation in the frequency range of 2-280 MHz.
• AX350D Watson-Watt HF/VHF antenna optimized to longer range direction-finding operations in frequency range of 20-88 MHz
• Antenna pneumatic mast for optimum reception performance.
• GPS receiver allowing position-stamped result logging.
• Client-Server software for remote control of receiver and DF functions.
• The Triangulation/Mapping option requires multiple DF stations linked by a suitable TCP/IP networking infrastructure. Bearing data from the DF stations is used for triangulation. The resulting position is displayed on a map overlay. Map source data is subject to separate licensing arrangements with the respective map provider.
• Additional monitor for increased screen real-estate if portability is not a major concern.
• Offline maps for mapping support without an internet connection; which does not require any licensing.
• DFing and decoding of various digital modes is supported via the optional WiNRADiO Digital Radio Decoder. The supported modes include: DMR/MOTOTRBO, dPMR, NXDN, D-STAR and APCO P25 (phase 1 and phase 2).
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