Sota Antennas #3: EFRW spool antenna
Discover the pros and cons of the EFRW spool antenna. Includes 3D design files, tips on using 24 AWG litz wire, and a guide to finding the best "random" wire lengths for 40m-10m bands.
Alexander Entinger
Inside the LXRobotics EMC lab
My company LXRobotics is offering free EMC lab access for non-profit ham radio projects in Hagenberg. Discover our measurement equipment, including TEM cells and biconical antennas, and get your EUT tested.
Raspberry Pi remote shutdown via batch file
Easily shut down Raspberry Pis remotely: use a Windows batch file calling Plink/SSH to issue sudo shutdown for each Pi in one click.
All OE SOTA Activity Day 2025
The All OE SOTA Activity Day 2025 will take place on 13th September 2025. Its focus is on OE wide portable ham radio operation from a mountain.
M0JKS Lightweight KX2 Microphone
OM David, M0JKS, has designed a very small and lightweight substitute microphone for the stock Elecraft KX2 mic. Very handy for SOTA ;)
Sota Antennas #2: Kanga QRP Endfed Halfwave ATU for 15 m
A micro build report on the Kanga QRP Endfed Halfwave ATU which I used for building a 15 m EFHW for SOTA activations.
All OE Emergency Exercise 2025
On May 1st, 2025 I participated in the annual AOEE - All OE Emergency Exercise - via portable station in front of Pregarten's St. Anna church.
I, OE5LXR, Mountain Goat
194 summits, 7 years and 5 months, 2940 QSOs after starting my journey I have finally obtained my first "Mountain Goat".
European SOTA Activity Day 2024
The European SOTA Activity Day 2024 took place on 14th September 2024. Its focus is on EU wide portable ham radio operation from a mountain.
Micro Build Report: Kanga Rooster 40 m CW Transceiver
The Kanga Products Rooster 40 m CW transceiver is a neat little rock-bound CW QRP transceiver. Pictures from assembly by OE5LXR.