Radio Direction Finders and Direction Finding Systems
The Doppler Radio Direction Finder
Established in 1981, Doppler Systems designs and manufactures fixed site and mobile radio direction finders and radio direction finding (RDF) systems. We provide RDF equipment and software for government, commercial, and amateur users. Because of our outstanding reputation, clients worldwide use our direction finders in many ways. For example, our direction finders aid in…
discovering unwanted interference
uncovering malicious intent
finding stuck transmitters
locating boats and aircraft
recovering stolen vehicles
tracking vehicle routes
pinpointing stolen cargo
Fixed Site and Mobile Direction Finders
In short, Doppler Systems offersfixed site and mobile direction finders for 100 – 1000 MHz. They are available in turn key configurations packaged for easy transport and assembly. In addition to our standard designs, clients can mix and match our components for a custom solution. We also provide software with simple homing functions and map-based transmitter geolocation. Furthermore, users can network multiple fixed site and mobile direction finders together to provide real-time geolocation of RF sources.
Our mission is to provide affordable professional quality radio direction finding equipment and systems with outstanding “customer first” service. Please contact us and we will help you with your RDF hardware and software needs. Thank you for choosing Doppler Systems, LLC!
A question frequently asked by our customers is “How close can I mount a transmit antenna to the direction finding antenna.” Typically we respond by telling the customer to keep the DF antenna well separated Read more…
The Federal Communications Commission (FCC) has elected to purchase 20 Doppler Systems fixed site radio direction finders. Operating from 100 – 1000 MHz, these direction finders are being used by FCC enforcement agents to locate Read more…
Doppler Systems recently hosted fifteen (15) FCC field agents for a three day training event at our University of Arizona Technology Center offices in Tucson, Arizona. This training covered all aspects of the assembly, checkout, Read more…