Version 3.1.22 of vna/J is released.

• The application JAR can be downloaded from here as usual.
• Separation of controls of the averaging logic from control for the speedup logic on the UI
• Averaging logic is now a true moving average over n-samples
• For miniVNA, miniVNApro and miniVNAtiny added more calculated data for transmission scan. Credits to YO3FFF Christi and G3TXQ for his document http://www.karinya.net/g3txq/chokes/s21.pdf

A new version of the headless application is available.

All configuration must now be done via the command line arguments. The average function is now implemented to reduce noise in the scandata. 

Please check the updated user guide for the headleass application here.

You can download the headless app from here.

Version 3.1.20 of vna/J is released.

• The application JAR can be downloaded from here as usual.
• Analyze moved from Tools menu to File menu to have it always available
• Some VNAs have longer startup time and will produce peaks at the begin of the scan. To reduce this issue, the generator can be kept on after scan. Thanks to Cristian/YO3BN for the hint

A library version of vna/J is available here for download.

In some cases the integrated bootloader of the miniVNApro is corrupt and so for the firmware update via vna/J is not working.

This is only relevant for the miniVNApro, not the pro2, tiny or any other modell!

I've updated the user guide for vna/J.

The firmware update function is now available, even if no calibration data is loaded. This update relates to this post.

Please check it here.

Version 3.1.19 of vna/J is released.

• The application JAR can be downloaded from here as usual.
• Firmware update is now possible, even no calibration is available.
• Size of language selection window corrected. Window is now also resizable

Version 3.1.18 of vna/J is released.

• The application JAR can be downloaded from here as usual.
• There s only one small change in 3.1.18 - |Z| is calculated correctly when using port extension

There were some user reports, that miniVNApro with firmware <2.6 is only working with vna/J < 3.1.15.

This is due to a miniVNApro firmware bug for versions <2.6.

• miniVNApro with firmware < 2.6 is only working with vna/J up to version 3.1.14
• miniVNApro with firmware = 2.6 is working with all versions of vna/J

Firmware 2.6 is mandatory using the extender and/or vna/J > 3.1.14.

To use all version of vna/J > 3.1.14, you have to update the firmware of your miniVNApro to the newest firmware.

It's up to you ...

Here is wish-/feature -list for the upcoming version of vna/J: