Hello John, Probably this was my signal, i've been transmitting Opera 32 until 8 UTC on 137.573 kHz. BTW i got a report by KU4XR in Tenessee: opds Results from overnight in Friendsville, TN. - EM75xr
John, Last night i've checked my 50 Hz sidebands (actually 100 Hz) on LF by using SpecLab and a Tecsun PL660 receiver, both running on batteries (ferrite antenna) and coupled via a cable. The sideban
Stefan, On previous occasions when I have noticed side bands on your transmission, they have been at worst -40 dBc which is why I was puzzled about the -20. It did not make sense. You will note I did