Here one I have recorded recently from an Ice Machine (i made fade in/outs)
https://www.dropbox.com/s/hpu6dtvg9gsat ... e%20CM.mp3
Summer is very very hot where I live , so there are many machines working (day/night), air conditioners, air tubes, etc . The thing I love about this, you NEVER know what you going to hear.
btw, Phil hope you can fix the DAT, otherwise portable field recorders are less expensive now.
Cheers,
AB