WAMU(FM) tested the supplemental channel with live programming for one hour on Wednesday night, May 12 as a demo for about 200 station members who gathered in NPR's board room. The American University-owned station has experimental authorization from the FCC to test its supplemental digital audio channel.
NPR newscaster Carl Kasell opened the program with a humorous monologue about how the new channel can enable listeners to hear his musings about the news during future broadcasts. Then American University graduate and pianist Patricia Puckett played several classical music selections. The audience heard the performance over a modified Kenwood HR-100 receiver.
The station returned to running taped programming on the supplemental channel after the demo.