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Natural Radio Lab

Natural Radio is the VLF radio emissions that originate terrestrially from lightning and within the earth's magnetosphere through interaction with the Sun. Most of these radio signals, sferics, tweeks, whistlers, chorus and others, occur within the range of human hearing, and can be heard with simple receivers as described on this site.

Natural Radio Lab also looks at Space Weather and Geomagnetic Storms. These are affected by solar activity such as the solar wind, sunspots, solar flares and coronal mass ejections or CMEs. In the popular media, these events are often loosely referred to as "solar storms" or "sun storms".

Please explore this site. I hope you go beyond reading what's here and actually go out and take the opportunity to hear whistlers or the enchanting sounds of the dawn chorus.

Mark Karney, N9JWF
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How do I find a quiet listening location?

naturalradiolab.com Posted on January 27, 2012 by Mark KarneyOctober 21, 2012

Finding a quiet listening location is usually the biggest challenge facing the Natural Radio listener. Power lines emit signals that are in the same frequency range of the signals that we want to hear, so the obvious solution is to get away from power lines. For good listening, you should be at least a couple of miles from high-voltage transmissions lines (These are the lines with big insulators that are usually on metal towers, but occasionally poles. They carry electricity from the power generating stations to the sub-stations.) You’ll want to be a half mile or more from distribution lines (These lines carry the power from the sub-stations to homes and businesses.)

Large parks and Nature preserves are the obvious places to start. Finding places with access in the pre-dawn hours is often difficult, but once you have searched out your “quiet sites” you’ll be set. Aeronautical maps sometimes show the larger transmission lines or you can locate them out by driving around and plotting them on a map. This will help you locate parks or other open areas in potentially quiet locations. Spending a few weekends driving around with a portable receiver should enable you to locate some good listening locations.

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