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How to install GNU Radio

The installation of GNU Radio doesn't have to be straightforward. The following script works well for me. See the screenshot from GNU Radio website.

Screenshot GNU Radio




How tu run miniVNA PRO in Linux Mint

MiniVNA PRO is a small Vector Network Analyzer with frequency range from 100 kHz to 200 MHz.

  • Download VNA/J to your folder.
  • Make it executable (chmod +x)
  • Run (see the following screen shot)



How to Install KiCad EDA with Libraries in Linux Mint

(Schematic and PCB editor)

Have you installed KiCad this way?


sudo add-apt-repository --yes ppa:js-reynaud/kicad-4
sudo apt-get update
sudo apt-get install kicad

Do you have the same issue? The following libraries were not found…

This should help: sudo apt-get install kicad-library




How to Install wxPython Phoenix in Linux Mint, Python 3.5

(GUI for Python)

I had to add these packages:

  • sudo apt-get install libgtk-3-dev
  • sudo apt-get install libwebkit-dev
  • sudo apt-get install libgstreamer-plugins-base0.10-dev 

As you can see in the following picture, this command worked for me:

sudo python3.5 -m pip install --trusted-host wxpython.org -v -U --pre -f http://wxpython.org/Phoenix/snapshot-builds/ wxPython_Phoenix



Good luck!

Bluetooth Handsfree and Inverted F antenna 

I bought a new hands-free from an online shop. Unfortunately, when I tried my first call with this device I found that the microphone is not working. I was thinking about returning the product but at the end I decided to try to fix that. As you can see in the following picture, the repair was straightforward. When I was fixing the polarity of the electret microphone, I found more interesting thing on the PCB - the invertered F antenna for bluetooth band (2.4 GHz) which is widely used in mobile devices. This particular antenna is connected to the source via coplanar waveguide with ground.

PCB  Iverted F Antenna