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Assigning COM Port Numbers to the Serial Ports of a USB-to-Serial Adapter, 6 May, 2008 gives the step by step method to configure multiple com ports assigned using a USB to serial adapter.
Using a Barix Instreamer to Remotely Connect a Direction Finder via a Network Connection, 18 January, 2008 describes how to set up and operate a remote connection using the Barix Instreamer to provide both data and audio from remote sites.
In-band Interference from a Nearby Transmitter, 17 July, 2006 contains graphs that allow the separation to be calculated between the DF array and a nearby in-band transmitter in order avoid damage and/or desensitization.
Product Identification and Compatibility of Obsolete Models, 27 June 2006 provides helpful information for identifying older models and discusses compatibility.
Upgrading USCG DDF6000 Processors
Downloading Frequencies from an Icom R8500 Receiver into Bearing Track, 15 July 2005 explains how to use the new utility program "R8500 Download" to capture frequencies stored in the receiver's memory banks and create a csv file that can be edited and used by BearingTrack and/or AutoTrack.
Remote Control and Operation of DDF6000 Direction Finders via DataRadio Modems, 3 June 2005, describes setup and operation of fixed site radio direction finding sites using the DataRadio modems.
Combining Fixed Site and
Using Multiple Instances of BearingTrack Server to Monitor Remote Serial Connected Sites over a Network, May 31, 2004, describes how to set up a PC with serial (COM port) connections to remote sites to run multiple copies of BearingTrack Server to allow network access to data.
Remote Display for Series 6000 Direction Finder, May 30, 2004, describes how to modify a Series 6000 direction finder to connect the 5921 remote display at J2.
A Covert Tracking System, April 25, 2004, describes the construction, calibration and operation of a tracking system based on the use of the Series 5900 Direction Finding System.
Using the Digi One SP to Network Doppler Systems DDF6001s using an Ethernet, February 6, 2004, shows how to use a Digi One in place of a PC with BearingServer at remote sites. This solution provides very economical remote internet connectivity with only a slight loss of capability.
Sensitivity of Series 6000/6100 Direction Finders, April 8, 2003, discusses the difference in the algorithms used in firmware versions 4.18 and earlier and the latest version 4.19, and it provides test data showing the sensitivity for both continuous and pulsed signals.
Using the JPS Communications NXU-2 for Simultaneous Voice and Data Over an Ethernet Network with Series 6000 Radio Direction Finders, August 30, 2002, contains the setup procedure and operating instructions for using these devices. An Ethernet network can now provide the bearing data, control commands, and audio from a remote site. Operate a direction finder over the Internet and listen to the audio.
Using MultiTech 5600DSVD Modems for Simultaneous Voice and Data with Series 6000 Radio Direction Finders, May 6, 2002, contains the setup procedure and operating instructions for using these modems. A single dial up telephone line can now provide the bearing data, control commands and received audio from a remote site.
Stress Analysis of Fixed Site Doppler Antennas, April 12, 2002, provides the stress calculations and safety factors for our fixed site antennas and antenna stacks subject to wind and ice loading.
Wind Loading on Fixed Site Doppler Antennas, December 4, 2001 calculates the wind loading on all of our fixed site antennas and antenna stacks.
ICOM R10 Receiver Modification to Provide S-Meter Output, April 21, 2001 gives directions for adding RSSI output to this receiver for use with any of the Doppler direction finders.
Programming and Using the Courier V.Everything Modem for Remote Operation of the DDF6000, July 5, 1999 gives the details for setting up and operating these modems in either a leased line or dial up line configuration.
Programming and Using the Motorola V.3400 Modem for Remote Operation of the DDF6000, April 11, 1999 gives the details for setting up and operating these modems in either a leased line or dial up line configuration.
Site Location for Optimal Triangulation, October 24, 1998 presents the error contours that result when 2 to 10 direction finders are optimally located in a square coverage area.
Remote Control and Operation of DDF6000 Direction Finders via Radio Modems, June 24 1998, provides a detailed setup procedure for both the EF Johnson 3295 and the Young Design 24R and 24CM radio modems for use with the DDF6000.
Changing Baud Rate on the DDF4003 or DDF5003, October 1, 1995 shows the circuit board modification needed to make this change.
Locating Cable TV Leaks using Doppler Radio Direction Finding Systems, March 15, 1994 provides suggestions as to which frequencies to use and the expected range for compliance measurement..