1.1 Khz ULF VLF antenna ultra low frequency weather proof narrow band scientific

1.1 Khz ULF antenna ultra low frequency weather proof narrow band scientific antenna. This narrowband, 1.1 kHz factory pretuned ultra low frequency antenna is tuned 600 Hz BELOW the ionospheric radio propagation cut off frequency. This is the lowest radio frequency that can travel "thru the air" in the earth-ionosphere natural waveguide. Waves lower in frequency are too big to fit within the earth's atmosphere as referenced to the ground. The antenna is useful for scientific research.

The antenna features a 50 ohm BNC output jack. 1.7 kHz frequency is the base frequency of the'Tweeks' that occur at night which are caused by the atmospheric dispersion of lightning static. THIS Antenna is tuned to 1.1 Khz, 600 Hz BELOW the cutoff "thru the air" frequency so anything the antenna picks up is underground propagated through the earth itself.

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