The latest version of vna/J can be always found here: http://vnaj.dl2sba.com

Version	Date	What
2.6.15	21 January 2011	miniVNA pro driver now supports variable length of calibration data. Added over scan feature for calibration data Extended parameter replacement for export functions Error handling enhanced when rxtxSerial.dll/librxtxSerial.jnilib is not found
2.6.13	8 January 2011	Updated formatter for |Z| fields, so that also values >1.000 are visible. Added entry field for reference value in Smith-charts. Provided two MS Windows batch files for application launch.
2.6.12	1 January 2011	Updated links and manuals to new website
2.6.11	14 November 2010	Bug fixed in velocity factor calculation. Thanks to Colin, VE3MSC Minimizing main window now also hides data- and marker-panel
2.6.10	7 November 2010	Restore of initial window layout possible Layout handling in datapanel enhanced In tune dialog now font also resizes to window Initial auto-centered dialogs are now always visible on screen The decimal separator for SnP and CSV export can be configured Autoexport is now completely configurable on separate dialog Reworked marker math dialog - thanks to Erik, SM3HEW
2.6.9	2 November 2010	Minor cosmetical changes
2.6.8	10 October 2010	Fixed issues in cable-length dialog for miniVNA
2.6.7	09 October 2010	Fixed file-extension swap for S-parameter files Fixed issue that requested scan range is not possible by miniVNA(pro) Updated data displayed in marker math dialog Fixed issues in cable-length dialog
2.6.6	15 August 2010	SM3HEW - Erik - thanks for Swedish translation Fixed frequency validation issue in multi-scan dialog Schedules scans can now write also Z-Plots and S-Parameter files New auto-export feature added for on-the-fly data export (each scan)
2.6.5	18 July 2010	Separate windows for markers and control LF driver for miniVNA now ranges from 15kHz to 1MHz LF driver for miniVNAPRO now ranges from 15kHz to 1MHz Read- and open-timeout default for all serial drivers set to 5s
2.6.4	04 July 2010	Added toolbar icon for ZPlots export AC6LA::Dan - Updated ZPLOTS export for +- phase values AC6LA::Dan - Corrected SnP export for non-US locales HG1DFB::Biro - thanks for Hungarian translations
2.6.3	20 June 2010	G0POY::Andy - thanks a lot for intensive testing and excellent comments !!! OZ9MO::Jarl - enhanced usability. Added border for diagram area. Changed wording in calibration dialog. Changed DDS default frequency for miniVNA PRO from 500MHz to 520MHz. Fixed saving bug on DDS-ticks. Fixed frequency calibration issue for miniVNA. Fixed frequency calibration issue for miniVNA PRO. Enhanced performance of network server. Added experimental driver for miniVNA PRO with extender. Corrected attenuator settings in miniVNA PRO generator dialog. Fixed Q-field display problem in Marker-Math-Dialog. Zoom with single marker visible now retains marker center frequency. Fixed right-scale color-display in color selection dialog. Selecting close-icon in tune dialog now shows message Selecting close-icon in marker-math dialog now shows message Selecting close-icon in synced smith dialog now shows message Two more diagram sizes added Added parameters to miniVNA driver info dialog Added parameters to miniVNA PRO driver info dialog AC6LA::Dan - thanks for details on S1P and S2P format AC6LA::Dan - Corrected file-format for reflection/transmission mode with ZPlots format
2.6.2	13 June 2010	Fixed generator problem for miniVNA.
2.6.1	13 June 2010	Minor fixes in multi-tune window.
2.6.0	24 May 2010	Copy JPG image to clipboard Location and sizes of various windows are retained.
2.5.5	13 May 2010	Initial version of marker math dialog added. Dialog added for antenna tuning.
2.5.4	08 May 2010	Fixed problem with generator support for miniVNA Polish and Italian translation added.
2.5.2	04 May 2010	Removed incomplete Italian and Polish environments
2.5.1	03 May 2010	Added I/Q-Support for miniVNA PRO
2.5.0	30 April 2010	Enabled support for miniVNA PRO
2.4.12	24 April 2010	Corrected inverted scales in data analysis dialog. Smith-chart for main window is now dynamically linked to the main diagram.
2.4.11	10 April 2010	Tracing can be now overwritten from the command line. See updated user manual. Changed speed-of-light to 299792459 m/s for cable length measurement Application URL corrected
2.4.10	09 April 2010	Added formatting of input and display fields on cable measurement dialog Fixed problem with not loaded calibration files
2.4.9	26.03.2010	Compatibility with JDK1.5 added
2.4.8	01 April 2010	Minor correction. Fixes some issues with SUSE Linux
2.4.7	22 March 2010	Corrected problem with Smith-chart on Linux
2.4.6	21 March 2010	Analyser data can now be stored and reloaded from file Smith-chart available for main diagram Data analysis function added to tools
2.4.5	20 March 2010	SWR-Scale in diagram exports is now also a logarithmic scale Added export for ZPlots Added experimental things. Save a scan as raw data and analyse it later.
2.4.4	12 March 2010	Fixed scheduler problem with multiple executed tasks Added search functions to swr, loss and phase marker Added color setup dialog for diagram area Added export into S-parameter file
2.4.3	04 March 2010	No need to reload calibration data after switching mode if data was already loaded previously. Previously loaded calibration data reloaded after application restart. Diagram exports should now export all available data.
2.4.2	01 March 2010	Added custom scaling and updated user manual.
2.4.1	28 February 2010	Added scheduler and description for scheduler to user manual.
2.4.0	26 February 2010	Shortcut for calibration loading. New marker panel. Automatic scaling on scales. Cable measurement extended.
2.3.2	23 February 2010	Extended description
2.2.1	19 February 2010	Minor corrections
2.2.0	18 February 2010	Generator support explained. Driver info dialog added. DDS calibration explained.
2.1.3	17 February 2010	Added first version of sample section Added hints and tips section. Statusbar updated.
2.1.0	15 February 2010	Update new logic for calibration. Extended overview
2.0.2	14 February 2010	Updated for new GUI and functions

Topic	Comment
ECLIPSE	Used for developing and testing vna/J.
RXTX	Used for access to the serial ports across multiple platforms.
Apache Commons	Basic reusable JAVA components.
Apache POI	Java API for creation of Microsoft Documents, here EXCEL worksheet.
Cron4J	A scheduler for the Java platform which is very similar to the UNIX cron daemon.
iText	A library that allows generation of PDF files on the fly.
JFreeChart	A free 100% Java chart library that makes it easy for developers to display professional quality charts in applications.
mRS	Providing these tiny blue boxes ...