DATA-log

Since googling up NASA’s online VLF receiver mp3 stream (seems to be defunct now, fortunately there are other streams available.. see http://abelian.org/vlf/) I wanted to try to receive these signals myself. So I came up with some schematics on the internet for a basic vlf receiver and built and tested a couple of these.

E-field receiver clip 1

E-field receiver clip 2

The sferics are crisp, loud and clear, the circuits work very well if the conditions are right. Small enough to fit a pocket, it’s interesting to walk aroud the area I live and listen in to the various weird signals eminating from all sorts of electronics and machinery. I’ve yet to record auroral activity, but that is next on the agenda.

I thought I’d share a few interesting internet radio streams here on my blog.

Live underwater antarctic stream

NASA online VLF receiver

NASA online 67.25MHz MSFC meteor radar

Interestingly the sounds you can hear thru these aren’t really that different, although the phenomena involved are totally different to each other.