Fixed Site Direction Finders
Doppler Systems offers fixed site radio direction finders covering the frequency ranges 115 – 1000 MHz (VHF/UHF/THF). Both systems utilize the same DF processor and software. The VHF/UHF/THF direction finder uses an eight element antenna array and a standard narrow band FM receiver to achieve 1 degree of bearing measurement accuracy. The HF direction finder utilizes six loop antennas with half wavelength spacing and a standard AM receiver. Either system can be operated on site or remotely and networking multiple sites enables geolocation of the RF emitter.