I've been using Spectrum Lab for years for the reception of "natural radio" VLF sferics in the 100 Hz to 20 kHz range. It has very effective 50 or 60 Hz filtering which permits the receiver to be used surprisingly close to residential power lines.
Steve, KB1TCE --- In [email protected], "Rudy Benner" <ben...@...> wrote: > > http://www.qsl.net/dl4yhf/spectra1.html > > should keep you out of trouble for hours and hours, let the grass grow. > > ve3bdr >
