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Kategorie: IoT Internet of Things

This was my first participation in the WAG contest since 2010 - and I must say, it was a pleasure!

I managed to complete 472 QSOs all in CW :-)

 

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Kategorie: Allgemein

I've planned to sell my ELECRAFT K2 so I placed some adds in the various HAM sources and I found a buyer willing give my K2 a new home.

Fortunately I decided to do a quick check on the K2 functions, to be sure, that the buyers receives a full functional K2.

I did the check in the late afternoon on 80m and I was shocked - strong stations can be received every 7kHz. Testing the transmitter shows a totally unstable RF signal.

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Kategorie: Transceiver

Some weeks ago I've build a full-featured XPhase for my father, DK1UO. He is sometimes affected by heavy interference from Plasma-TVs or similar scrap

The function of the XPhase is based on the fact that the interfering signal, received by an auxiliary antenna, is added phase-shifted to the signal received from the main antenna. When the phase-shift is more or less 180°, the interfering signal is canceled out.

My XPhase is based on the work of Hanns, DK9NL. A commercial versions can be found here under the name QRM-Eliminator. Google will provide you some futher informations.

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Kategorie: Shack

I've ordered the LF-converter BX-082 kit from the German HAM Radio magazine FUNKAMATEUR already some months ago and now found the time to build and test it.

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Kategorie: Transceiver

It all started with an article in the issue July 2014 of the German amateur radio magazine FUNKAMATEUR. Martin Kumm, DC3MKB published in this issue an interesting article for a smart SMD soldering station based on the well know ARDUINO UNO.

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Kategorie: Tools

In this post, I've showed, how to setup Mosquitto on an Windows 8 machine. Now let me describe, howto connect an Arduino via Ethernet to the running Mosquitto MQTT broker.

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Kategorie: Arduino

After my first experiments with 2elemtry, I decided to give MOSQUITTO a try. Mosquitto is a small MQTT message broker, which provides basically the same functionality like 2lemetry.

Here the steps, I got Mosquitto up und running on my Windows 8 machine:

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Kategorie: Arduino

During my researches for my home automation project I also stumbled across the MQTT protocol for sensor-server-communication. A matching arduino library was found quickly here on Nick's blog. An arduino sketch was quickly copied from here and modified. Download my version from here.

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Kategorie: Arduino

  1. Neuer DARC Image Film
  2. nanoKeyer - neue Frontplatte
  3. Capacitive (water) level sensor
  4. MODBus shield
  5. MODBus master
  6. MODBUS slave
  7. Capacitive level sensor - electrode design
  8. MODBus Node with level sensor
  9. Arduino Home Automation
  10. MODBus - register usage
  11. nanoKeyer - Extensions - 2nd
  12. nanoKeyer -Extensions
  13. Zusatzschaltungen für Arduino etc.
  14. Update I2C LCD-Library for Arduino
  15. nanoKeyer - Arduino based memory keyer
  16. Digital-Multimeter comparision
  17. Splitter/Combiner - Funkamateur.de
  18. KW-Antenne MP1
  19. Hochleistungswiderstand
  20. Mini Morsetaste SQUEEKY
  21. ShackController
  22. Reverse Beacon Network
  23. Dune HD Smart B1 + S-Video

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

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