SZ1A's ongoing improvements are bolstered by donations, sponsorships, and volunteer work. Contributing to this ... - Listed in Technical Reference/Lightning Protection
This online calculator determines the missing value among inductance (L), capacitance (C), and resonant ... - Listed in Technical Reference/Calculators
Before the advent of satellite communication, maritime communication adhered to an international protocol requiring ... - Listed in Operating Aids/Time
A Shortened 20 thru 40 Meter Vertical for POTA, Moon tracking DLL, Sideswiper Net, Practical Design of Very High Gain Yagi Arrays, DJ5IL Karl Transmitting on Shortwave since 1973