Sunspots and HF propagation

VAQP QSO Percentages

QSO data from a state QSO party reveal trends in HF usage correlating with sunspot numbers.

The need for 9600 bps AX.25

Where AX.25 fits into the ARS digital landscape

Despite its age AX.25 can compete with the slick newer digital technologies. Let’s see where packet fits into the digital landscape.

Small Loop HF Antenna

With components from a variety of vendors, custom machining and a bit of trial and error, another variant of a small loop HF antenna is born.