Lrl from Italy

[FrancoItaly]

Hi All
I don't have much explanation to give to you, I think that all Lrls are passive receivers, but not a broadband receiver (I think that the "phenomenon" doesn't have a particular frequency). My lrl amplifies many times an internal signal of about 3Mhz and it measures the phase change between the oscillator and the amplifier stage but it's also possible to measure the amplitude change. The phenomenon changes the phase (and the amplitude) of the amplifier stage but I don't know if only long time buried metals are the cause of the phenomenon. Surely with too gain the Lrl reveals also the "compass effect". The Lrl is not a metal detector but only a "abnormal signals" detector, I suppose that the solar wind may be involved in this "phenomenon" but I'm not sure.
Best Regards