Lightning Strikes create powerful radio waves in the frequency range of 3 KHz (audio, VLF) through 10 MHz (shortwave radio). The VLF (3000 Hz to 30000 Hz) "lightning signatures" can travel around the world, allowing monitoring of world-wide lightning. The shortwave "lightning signatures can travel half-way around the Earth (the night-time side of the Earth). The best region to listen for distant shortwave lightning signatures is from 2 MHz through 7 MHz. After 3 AM local time you can listen to 3 MHz and hear the beautiful dispersion-ringing of the static as it bounces back-and-forth between the earth and ionosphere. It can at times sound like hundreds of tiny bells ringing at once!
D2 frequency is Up to the end of 1999 - 315MHZ and From 2000 onwards - 433MHZ

