News

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 the DV1 a jumper must be removed from the DDF7001 processor.  Our application note Using the DDF7001 with a AOR DV1 Receiver describes how to 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 our customers for your support!

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 many customers.  So, we’d like to acknowledge them (in no particular order) QuikTek Assembly For nearly 10 years QuikTek assembly has been our contract manufacturer 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 new software. If there are any additional receivers you want us to support, send us an email.

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 finders.

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.

We sell our mobile direction finders in two different configurations: our component configuration and our packaged configuration.  The direction finding performance is identical for both configurations so why do we offer two configurations?  The answer boils down to customer needs and preferences.  The minimal component configuration consists of a direction finding processor, an antenna summing unit, and a set of antennas.  To this complement of equipment the customer adds a narrow band FM receiver and Read more…

In general it is not good practice to locate a transmitter close to a direction finding antenna.  But how close is too close?  We’ve updated our application note on this subject.  In the application note we calculate the separation required to insure that there is no damage to the direction finder.  We also calculate the level of desense caused by nearby tranmitters and the separation required to provide optimum direction finding performance.  If you are Read more…

Doppler Systems recently completed a build of 15 fixed site systems and 7 mobile systems for one of our customers. We thought you’d like to see some photos we took during the manufacturing and test of these system. All of the final assembly and test is performed in our Carefree, Arizona facility.

We just released version 3.2.11 of TargetTrack. When using the Great Maps facility in TargetTrack this version allows the user to import placemarks from a .gpx file. This is a standard export format for Garmin software.  To download the latest version of TargetTrack head on over to our downloads page.  Feel free to e-mail us or call us with any questions.