I've recorded this by accident. I left ardour recording on my laptop via zoom h2 and forgot about it. Meanwhile my cellphone must have communicated with the gsm network, and the zoom h2 have captured the signal. Luckily no background noise is present. Enjoy this annoying sample :).
A long recording of my dryer running with a few clothes on. I noticed there were a lot of dryer recordings, but none were very lengthy, so for those of you who need a larger file, here you go!. Recorded on a at3525 mic.