KCDX is an extremely unusual commercially licensed station, so certainly could be running advertising. The owner, Ted Tucker, has a history of building, moving and technically upgrading broadcast properties for profit. He has previously used the commercial-free format as a 'placeholder' on his stations until they're fully upgraded and sold. Meanwhile, Tucker's got lots of happy fans. However, KCDX has been doing this for some years now, and all bets are off as to the real intent.