In the German QRPForum someone mentioned a group of QPR enthusiasts QRPGuys. They have some neat QRP kits - transceivers as well as antenna-tuners.

I gave these kits a try: QRPGuys Portable Tri-Band Vertical Antenna and the QRPGuys 40m-10m UnUnTenna Plus   

This post deals with the first one - the QRPGuys Portable Tri-Band Vertical Antenna.

Details
Kategorie: Antennen

In the German QRPForum someone mentioned a group of QPR enthusiasts QRPGuys. They have some neat QRP kits - transceivers as well as antenna-tuners.

I gave these kits a try: QRPGuys Portable Tri-Band Vertical Antenna and the QRPGuys 40m-10m UnUnTenna Plus   

This post deals with the second one - the QRPGuys 40m-10m UnUnTenna Plus.

Details
Kategorie: Antennen

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

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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

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

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

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