RadioReference.com Forums

If you just got some decoding software and want to try your hand at it, it can be very frustrating, because so many sigs out there are encrypted or encoded so that the casual watcher can't understand it.

To make things easy, I've put together a list of easy-to-find stations that can be decoded (with the right software). You can find that list here;

Testing Your New Setup - The RadioReference Wiki

And I would be remiss - even though it's technically OT since this is a non-ham forum - to mention the ARRL transmissions...

Digital Transmissions

Remember having the right software for the right decoding job is a very important decision in this game

If you know of any other easy to hear digitals (apart from hams), please feel free to update the wiki article above

Mike