I just got home from the National Association of Broadcasters convention in Las Vegas. Continental Electronics is a major US proponent of the DRM (Digital Radio Mondiale) system of digital transmission of voice/music over shortwave.
http://www.drm.org/Right now they are demo'ing reception of this mode at their convention booth, using a 30 watt special transmitter about 12 miles from Las Vegas. It is -retransmitting an NPR feed from KNPR, and they are using a custom TCI-designed skywave-suppressing antenna, so it may be tough hearing anything on 26.02 MHz. Its going until Thursday, 24 hours/day. If you hear anything at all, it may only be a hiss, unless you have a DRM decoder circuit.