LA3ZA Radio and Electronics

As a self appointed nerd I have a special fascination for watches with binary displays or with morse code readouts. It seems as if such wa...

Final 'F' in UA3MIF. Notice echoes of final dot marked by arrows. Press image to enlarge. There were excellent conditions durin...

Field lines (black) and potential (red) for a dipole, static field.  In QEX July/August 2011 Robert K. Zimmerman (NP4B, VE3RKZ) had an ...

In July 2011 Don Wilhelm, W3FPR, suggested that someone ought to write a comprehensive K2 Owner's Manual . This posting does not qualify...

AT Sprint rig in an Altoids box, itself contained in a video case. Digital voltmeter in lower left corner shows 12.0 Volts. (Click for l...

Tonight had nice aurora conditions on 6 meters due to a geomagnetic storm . The Elecraft K3/P3 combo did an excellent job in showing how ...

At my summer cottage (58° N, 9° E), I have two crossed doublets with their centers on the top of a mast as shown in the image. Of course...

I've had a lot of fun with the modified WBR (Wheatstone Bridge Regenerative) receiver which I built Manhattan-style some years ago. Th...