Oh thanks that's a great suggestion, happily I already have this lovely little module!!

It's surprisingly useful as a noise source, even when there's nothing juicy to pick up :)

I think I could setup a huge SW antenna where I live now, I might look into doing that next summer when the weather is a bit better...

I also keep meaning to look into a little transmitter for it, send some sounds through the air and pick them back up again with that little dark black cauldron!