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

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:

Version 3.1.17 of vna/J is released.

  • The application JAR can be downloaded from here as usual.
  • There are no functional changes in this release.
  • Yuriy Osadchiy contributed a complete translation into the Russian language - thanks Yuriy for your work!

A new version of the translation guide is here available for download.

It covers the problem, that on some machines the properties editor using JavaWebStart is not launching.

Based on the serial numbers for the currently shipped miniVNA tiny analyzers, there are more than 1.000 devices out in the field.

Version 3.1.16 of vna/J is released.

  • The application JAR can be downloaded from here as usual.
  • The following updates are included in this version:
    • Mode in marker math dialog is correctly selected for scan mode
    • Marker math dialog optimized

In one of my lasts post I've shown some data about the generator output level of the miniVNAtiny.

Now I've received from S. Petrovich a much more detailled analysis of the output power level for a miniVNAtiny.

Gopan VU2XTO has done an amazing hack. He packaged an F4GOH VNA together with an RaspberryPI 3, an LCD touch display, a touch pad and a small OLED display in a little box and - voila his standalone VNA is ready to go.

A

Here a short description from Gopan how he did this - for any questionx regarding his solution, please contact him directly.

Version 3.1.15 of vna/J is released.

  • The application JAR can be downloaded from here as usual.
  • The following updates are included in this version:
    • Generator is turned off after scan
    • Updated driver for MetroVNA

Some months ago Andrew Rich, VK4TEC and Geoff Robinson, VK4KJJ provided me a chart where they measured the generator output level over frequency:

VK

They used a ROHDE & SCHWARZ NRP2 with an NRP-Z81 power sensor.


You can buy the author a beer to support the further development of vna/J.

Please use this PayPal link.

Many thanks in advance for this donation!


You can contact me by email icon or via Twitter @dl2sba

2014 CW (Morse Telegraphy) was added to the German Nationwide Inventory of Intangible Cultural Heritage.

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