working on:

• Freifunk

  • Freifunk Berlin

• DIY antennas

  • 2m/70cm Groundplane with modified base to make it more compact

ham radio topics of interest now or planned for the future:

• DIY antennas

• EMCOMM Notfunk

• Digimodes

• HAMNET QRP: get connected on 5GHz with 1W EIRP and then tell Freifunk

misc info:

• APRS

  • www.aprs-berlin.de APRS in Berlin
  • www.xastir.org Xastir
  • QTMM simple AFSK1200 Decoder

• Bias Tee:

  • http://www.hayseed.net/~jpk5lad/K5LAD%20Memories/Vols%2031-35/Memories--Vol33.htm
  • http://www.ifwtech.co.uk/g3sek/in-prac/best-of.htm#0904

• Diplexer:

  • http://www.radcomms.net/Quadplexer.html
  • http://yo3hjv.blogspot.de/2008/05/hfvhf-uhf-diplexer.html
  • http://k0lee.com/duplexer.php-
  • http://www.dc2light.pwp.blueyonder.co.uk/Webpage/Diplexer.htm

• Antennas:

  • 2m-Antenna+coax used as 10m-160m vertical

• Diverses:

  • AD5X

• passive POE gigabit ethernet

• Code Oscillator (~1980)