My name is Holger and my callsign is DM5TT. I’m located in Esslingen am Neckar which is close to Stuttgart.

I started playing around with ham radio Nov. 2020 using my first callsign DO6GE (no longer in use) and then upgraded to DM5TT in June 2021.

If you are able to hear me, my transmission most likely will be portable QRP.


  • Selfbuild 80/40/20/15/10 EFHW with a shortening coil for 80m
  • Selfbuild 40/20/10 EFHW with a shortening coil for 40m
  • Selfbuild ultralight dipole for 20m

  • 2m/70cm WiMo LogPer
  • 12-element Yagi for 23cm, splitable into two halfes


  • Icom IC-705
  • (tr)uSDX
  • Anytone AT-D878UV


  • SG Labs 2m<->23cm transverter

Feel free to contact me on the waves!