Does anyone out there have elevated knowledge in regards to ELF sensors and hz frequency readings?

A lightly loaded induction motor will radiate a tiny amount of about 5 hertz rf. A 5 hertz strobe light will radiate some 5 hertz rf, but not much. Also a flickering florescent tube and slow scan video. Powerful ELF rf generators can be built, but they are expensive as applications are few as extremely long antennas are needed for good results and the band width is almost zero. The 5.000 infers that your ELF might measure as low as one millihertz. The manufacture of your ELF meter may not be thinking precision scientific, so a malfunction for 60 seconds is possible, but I agree, a very unlikely coincidence. Earthquakes and volcanic eruptions can generate ELF, but not usually exactly 5.000 hertz. Why do you think it is God instead of Satan that answered your prayer? Neil