Sferics (vertical lines) recorded at home with 1 mt loop, VLF H-RX and PC sound card (Compaq Armada).

Tweeks recorded at home with 1 mt loop, VLF H-RX and PC sound card (Compaq Armada).

Tweeks (in the right) and sferics recorded at home on 03 SET 2000 15.35 UTC with 1 mt loop, VLF H-RX and PC sound card (Compaq Armada).

Very weak whistler (in the left).

Strong HUM on 0 - 1kHz band.