Fausto, the effect referred to by the professionals as ICM Ionospheric Cross-Modulation.....is probably what you hear. The two stations are often refered to as the "heater" and the "victim". The "hea
Is this a Luxembourg effect ? First 40 sec i listen at 137 KHz, after i tune at 153 KHz on the original transmission. RX is a Perseus SDR with a 200 KHz low pass filter at the input for eliminate MF
I could not send the audio file attachment to the reflector, i think for Kb limit, the signal is not strong and is audible also with 30 dB attenuator at the antenna so, is not a receiver overload. I
Thank you Alan for information, the phenomenon is present every days after sunset and disappears at sunrise. Unfortunately is present exactly into the ham band but the strength is not so great and i
Fausto, I believe the Luxembourg effect is a form of cross-modulation occurring in the ionosphere when there is a high power transmitting station somewhere on the path between the receiving and trans
Dear LF Group, Just amusing myself with the 136kHz modified SoftRock, listening to the Hungarian "DCF" station on 135.4kHz on lower sideband - the Luxemborg effect is very strong this evening and the
