Today we had a meeting in our local amateur radio club ESSLINGEN P02.The topic for this meeting was WSPR.

Bernd DK9BH was the organizer of this meeting. He has ordered about 10 WSPRlites from SOTABEAMS. 

I had the chance, to do same basic measurements on one of the WSPRlite units.

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Kategorie: WSPR

Last year I've build the cheap Frog Sounds QRP Transceiver. This transceiver has a pretty basic audio section - a simple LM386 audio amplifier with some LC/RC filtering.

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Kategorie: Shack

 

Here are the first pictures of my KiwiSDR setup ...

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Kategorie: SDR

I've build the original QRP-labs U3S from stock. Means the supplied crystal on the PLL-based synthesiser-board.

This configuration is basically working up to 20m with a lot amount of drift, but you will get many decodes on wsprnet.org. On 6m you can also get spots - once a day :-/

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Kategorie: WSPR

I've finished my second U3s.

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Kategorie: WSPR

Check out my new KiwiSDR running:

 

http://dl2sba.ddns.net:8073

 

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Kategorie: SDR

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.

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Kategorie: RF Powermeter

Ich habe das Leistungsmessmodul von Oliver, DG7XO nachgebaut. Es wurde in zwei Versionen in der cqDL vorgestellt. Oliver hat mir freundlicherweise eine Platine geätzt und den AVR programmiert, so dass nur noch Löten und Mechanik angesagt war...

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Kategorie: Shack

Test setup

MA1

I made some measurements using my miniVNApro with a simple test fixture fittig the QRP labs lowpass filters.

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Kategorie: WSPR

  1. WSPR - QRP-Labs U3S signal quality
  2. WSPR - QRP-Labs U3S
  3. WSPR - QRP-Labs U3S bad power supply
  4. RF Powermeter - Firmware 1.8.1
  5. RF Powermeter - Unstable reading - Reloaded
  6. hamware AT-515 Firmware
  7. hamware AT-615U Firmware
  8. hamware AT-615B Firmware
  9. hamware AT-502/AT-515/AT-615U Interface
  10. hamware AT-502 Firmware - Erweiterung für 160m und 80m
  11. hamware AT-502 Firmware - Update CI-V Schnittstelle
  12. hamware AT-502 Firmware - IRB P02
  13. hamware AT-502 Firmware - K2+RUMLOG
  14. hamware AT-502 Firmware - Kenwood erweitert
  15. GPSDO - Distribution Amplifier
  16. GPSDO - Commandline interface
  17. GPSDO - Some Measurements
  18. GPSDO - GPS Disciplined Oscillator
  19. RF Powermeter - Uploading HMI file
  20. RF Powermeter - Firmware 1.8.0
  21. RF Powermeter - Firmware 1.7.2
  22. RF Powermeter - Unstable readings
  23. RF Powermeter - Firmware 1.7.1
  24. RF Powermeter - Firmware 1.5.0
  25. RF Powermeter - Adopted Nextion library
  26. RF Powermeter - Precision
  27. SOTA - Flight deck for KX3
  28. SOTA - DM/BW-094 - Kornberg
  29. SOTA - DM/BM-344 - Kleiner Kulm - My first activation is done
  30. SOTA - Working conditions

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

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