[Spooks] What the heck are these sounds...?

[corqspy]

Okay - it's bugged me long enough.

Link to the directory is here, only those two files are the culprits:
http://www.corqspy.net/shortwave

I'm only a listening buff, enjoy the occasion stray spy numbers
broadcast. Oftentimes, I scan around looking for wefax's and benign
stuff to decode, as I'm band-scanning I hear stuff and halt the radio
thinking I hear fax hiss and I get both this hissing,
wind-in-a-microphone sound, or that clinking/pinging sound.

I'm assuming these arent things for the public to decode but: are they
atmospheric anomalies, some form of digital beacon, or is there a
*really* badly grounded appliance in my apartment???? (I rule out
NOTHING in my place, heh).

These noises have bugged the heck out of me for years now - and I
haven't quite found them on the "Digital Sounds" pages that I know of -
I check those when I can.

Anyone know? TIA - and yes, perhap I will cut back on the caffeine... =)