In this post I describe in details, how you can create the calibration factors for k0 ... k3 based on raw data measured with the power sensor.

With the firmware version 1.8.1 there are some minor enhancements:

• Offset value is displayed on main screen. "O" at the end of the unit is removed
• Waveform display also correct when offset is enabled

Here are the required files:

• Sketch
• NeoNextion library
• AD7881 library
• AD8318 library
• PeakHold library

With the firmware version 1.9.0 there are some minor enhancements:

• Peak-hold works now, when offset is set
• Meter and diagram works in dBm and W mode

Here are the required files:

• Sketch
• AD7887 library
• AD8318 library
• PeakHold library
• NeoNextion library

CobWeb from eBay

Last weekend I've finished my QCX-mini kit for 20m from QRPLabs.

This was a birthday present from my wife and she is very happy, that the QCX-mini now works great ;-) I'm too ...

On Sunday I was able to make three contacts to the US south coast - 5w and a dipole - thats fine.

The Nextion display needs the content defined in the file PowerMeter.HMI. You can either upload it with the Nextion editor via a serial link to the display or you can copy the TFT file to an SD card and put this into the socket on the Nextion display.

I've updated the the display control files to the current Nextion Editor 1.62:

   HMI-file for the editor: here

   TFT-file for direct load to display: here

Comparison between an unmodified MH-31 microphone (dynamic mc) at my FT-818 in SSB and a modified (electret capsule)

All data measured using the ELV Energy Master Profi-2 Energy Master Profi-2:

Ich habe die Firmware für die Hamware Tuner um den Yaesu FT-991A erweitert.

In Verbindung mit den Logbuchprogrammen UCXLog und Swisslog folgt der Tuner automatisch der eingestellten Frequenz.

Nähere Infos sind hier zu finden.

One of my HAM fellows has build a new 2kW HF amplifier. Together with his SDR ANAN-100 he gets really impressive IM3 values.

This inspires me also to do some measurements on my existing HF transceivers - K3 & KX3. For this I needed a two-tone generator.

Ich habe die Firmware für die Hamware Tuner um den Yaesu FT890 erweitert.

In Verbindung mit dem Logbuchprogramm UCXLog folgt der Tuner automatisch der eingestellten Frequenz.

Nähere Infos sind hier zu finden.

Ich habe die Firmware für die Hamware Tuner um den Yaesu FTDX-5000 erweitert.

In Verbindung mit dem Logbuchprogramm Swisslog folgt der Tuner automatisch der eingestellten Frequenz.

Nähere Infos sind hier zu finden.

I have some stuff for sale. Please contact me by Diese E-Mail-Adresse ist vor Spambots geschützt! Zur Anzeige muss JavaScript eingeschaltet sein! if you're interested. Prices are negotiable.

Some steps

This is the way I got PORTAINER running on my DS218+

Configuration of SONOFF TH16 module with current TASMOTA FW 

Here you can find the latest NOAA satellite pictures received at JN48OQ

I found a very interesting air quality sensor board from the Germany company OhmTech on Tindy. One of this magic Bosch Sensortec sensor - the BME680 - is used in conjunction with an STM032F72 microcontroller to give a neat "USB-sensor-stick":