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.

Details
Kategorie: RF Powermeter

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:

Details
Kategorie: RF Powermeter

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:

Details
Kategorie: RF Powermeter

CobWeb from eBay

Details
Kategorie: Antennen

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.

IMG 5208

Details
Kategorie: Transceiver

I've developed a small interface board for the HAMWARe controller AT-502, AT-515 and AT-651B. This interface boards supports RS232 and CI-V communications and can be directly mounted into the controller chassis.

DSCF2112 DSCF4106 DSCF4108 DSCF4109 DSCF4112

Details
Kategorie: hamware

You may have seen my build version of the M0UKD sensor keyer and the Bamatech sensor head.

As you can see in this post, I've used a simple slide switch to control the power for the sensor keyer. This was a little bit annoying, as you must always check, whether you've turned of the power, when you leave the shack.

As power consumption is not really a big issue - the keyer draws about 2.5mA from two AA-cells. Based on the capacity of an average Energizer Classic AA battery of 1.200mA you will get an on-time of about 300h.

Since many months I've had the idea, to add an electronic switch to the keyer, so it switch of automatically after 15 minutes of idle time.

Details
Kategorie: Shack

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.

Details
Kategorie: RF Powermeter

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

 

Details
Kategorie: RF Powermeter
  1. SOTA - equipment weight list
  2. Yaesu FT-818 - Modification MIC MH-31
  3. Power usage ...
  4. hamware AT-502 - Firmware
  5. hamware - FT-991A Unterstützung
  6. 2-tone generator - FA-2-NF etc.
  7. hamware - FT890 Unterstützung
  8. hamware - FTDX-5000 Unterstützung
  9. Sale
  10. IoT - REDIS server as docker@Synlogy
  11. Docker@Syno::Portainer
  12. IoT - Tasmota - TH16
  13. NOAA received @ JN48OQ
  14. Es'Hail - new pre-amplifier
  15. IoT - Air quality sensor
  16. Es'Hail - my current setup
  17. Contesting
  18. Bodnar GPSDO - 10MHz Low-Pass Filer
  19. LimeSDR - Housing
  20. LimeSDR - Measurements
  21. Es'hail - WLAN Grid antenna
  22. JackYack - simple memory morse keyer
  23. SSTV from ISS during February 2019
  24. Docker@Syno::InfluxDB
  25. Raspberry Pi Logbook
  26. Setting up mail on an RPi to an SMTP host
  27. Weather satellites reception - first steps on Linux
  28. IoT - NodeRED - Backup
  29. IoT - Grafana - first steps
  30. IoT - InfluxDB - first steps

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

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