Roger G3XBM's (Mainly) Amateur Radio Blog

These amazing pieces of test gear bring some otherwise very expensive test equipment within the reach of radio amateurs. Years ago, these wo...

Well, I think I know how to drive it, so I may try to better match my earth-electrode "antenna" in the ground tomorrow after I get...

Recently, I purchased one of these, mainly to measure the VSWR of my various antennas. At the moment, I am still learning to drive it.  Ther...

The NanoVNA is a palm sized vector network analyser  I have the TinySA, which is its brother spectrum analyser. Like many things out of Chin...