Outdoor water filters #3 - presenting results of torture test

Outdoor water filters #2 - manufacturer claims meet reality

Outdoor water filters #1 - lots of claims but no proof ? MSR, Grayl and Sawyer questioned

How to edit and use (tr)uSDX CW memories....

Re-visiting EFHW - some practical experiments in the field.....

EFHW transformer re-visited: improved core material & easier efficiency measurement

Double activation castle "Hohenburg" and "Lauterachtal" (WCA and WWFF) while testing new equipment

Flora-Fauna-Fun or how to get "pile-ups" with QRP: 1st time activation of DLFF-0948

Belgium HAM and BEER Tour 2023 - with DL1DN and PE1NNZ

Summer 2023 - what´s up ?

(tr)uSDX - digimodes without audio cables - only via USB

Free (tr)uSDX at HAM RADIO in Friedrichshafen for the youth in need, visit DL1FLO @ DARC booth

Announcement: Winners of the YOTA special

(tr)uSDX Rev 1.2 available + YOTA special ! Watch complete Video !

I have an idea, what do you think about it ? Should I start a shop ?

...and the NEW Winner of 5000 subscriber special is.....

And the winner of the 5000 Subscriber giveaway (originally was, but did not contact me in time)

Introducing (tr)uSDX Mainboard Rev 1.2 - reverse polarity/over current protection

5000 Subscriber special - giveaway of rare (tr)uSDX.

Open Invitation to Programmers - creating virtual Soundcard for (tr)uSDX

(tr)uSDX smear campaign ? who cares.... let´s move on

(tr)uSDX Beta firmware - now with spectrum scope !!!

Small victory over fake (tr)uSDX sellers !

(tr)uSDX Firmware - New rules explained

(tr)uSDX - updating firmware or how to get your Callsign displayed...

Update on "Black" fake (tr)uSDX. Now targeting UK and VK. Don´t buy that !!!

(tr)uSDX emergency radio "bug-out-box", that always stays in my car....

One year (tr)uSDX and 10.000 (tr)uSDX later..... Thank you !

(tr)uSDX clones everywhere - a conversation with the responsible guy....

Update on fake (tr)uSDX, and how they still try to enter the market....