I have added another section called "More fun with Spectrum Lab" to my article at http://www.qsl.net/k0lr/SW-RX/sw-rx.htm. It shows a wideband (181 to 190 kHz) spectrogram on which BRO, WEOH and WEB are all visible, and a plot comparing the amplitudes of those three LowFER signals -- two from about 70 miles away and one from 1170 miles away. Lyle, K0LR