Many times we’ve been asked why we use biconical antennas for our fixed site antennas. The short answer is that compared to a dipole the biconical antenna provides superior sensitivity over the entire bandwidth of the antenna. We’ve published an application note that puts some numbers to our claim. Take Read more…
The FCC has selected Doppler Systems to furnish a suite of fixed site radio direction finders. These fixed site direction finders are designed for quick setup and disassembly, allowing the FCC to rapidly move them to locations of opportunity. Doppler Systems is proud to partner with the FCC in supplying Read more…
Amcept, LLC’s SigTrax apps now work with Doppler’s DDF6000 and DDF7000 series processors. SigTrax is a map-based signal tracking tool kit available for both IOS and Android devices. SigTrax has an intuitive user interface that is designed to be simple and easy to use and can be customized using the Read more…
We are very excited to announce the addition of the ICOM R30 to our receiver line up. The ICOM R30 is a compact and affordable receiver with the added bonus of a built in GPS. We control the receiver and charge its battery through the USB port. In locations with Read more…
We are happy to announce the addition of the AOR DV1 to the receivers supported by the DDF7001 direction finder. Version 2.37 of the firmware includes this receiver. The firmware upgrade is available from upgrades. The latest versions of MPT User Interface and TargetTrack are required as well. To use Read more…
We have recently built and shipped our three hundredth system using our DDF7000 series processor. Since 2000 Doppler Systems has delivered over 1200 direction finders to our loyal customers. Our DDF7000 continues to deliver exceptional performance at a price point that no other DF make can match. Thanks to all Read more…
Our success here at Doppler Systems requires a team effort. Our vendors routinely go above and beyond all our expectations. They are all based in the United States (most of them in the Phoenix area) and their contribution is key to us delivering high-quality radio direction finding equipment to our Read more…
We recently added support for the ICOM R8600 receiver to the DDF7001 processor. If you are interested in using this receiver please download the firmware upgrade (v 2.35) and the latest versions of the MPT User Interface and TargetTrack software. Let us know if you have any problems with the Read more…
Our founder David Cunningham has sold his share of Doppler Systems to Brenda Holmes. Dave will continue to provide technical support and consulting. Doug Havenhill will be responsible for the day-to-day operations of Doppler Systems. Brenda will be responsible for development of the next generation of Doppler Systems radio direction Read more…
Doppler Systems is excited to announce that Brenda Holmes has joined our team. Brenda has a MSEE from University of Arizona specializing in RF and antenna design. She also has 14 years of electronic circuit design experience. She will be in charge of all our circuit and antenna design activities.