WWFD in Frederick, Md., recently concluded the experimental phase of its MA3 HD Radio operation. It has notified the FCC that after five years, it will now continue to operate as a full-time all-digital AM station as is allowed under commission rules.
The author is a senior broadcast engineer and program director for Hubbard Broadcasting. He provides an update for Radio World readers on the experimental work that has been done.
With apologies to Star Trek, this summer WWFD (820 kHz, Frederick, Md.) completed its “five-year mission” of testing the all-digital HD mode of AM broadcasting known as MA3.
On July 31, we submitted a Digital Notification to the FCC, transitioning the station from digital operations under Experimental Authority to normal licensed operations. Up to almost the very last day, WWFD was working with Xperi Corp. to support as much field testing as…
