Portable VLF antenna for listening to natural radio emissions tweeks whistlers

Portable wideband VLF antenna for listening to natural radio emissions Tweeks and Whistlers. For reception of the ULF and VLF band 1000 Hz to 4000 Hz, for listening to Tweeks and Whistlers and other natural radio waves. Self Resonant at 8000 Hz (The Niquest frequency of double 4000 Hz) for high detail audio. Simply connect this antenna directly to the microphone input of a sensitive tape recorder, digital audio recorder, or audio amplifier and listen to it away from powerlines and other sources of man-made noise at night to hear the beautiful sounding Tweeks and the more rare Whistlers. 25 inches long X 2.5 inches wide.

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