Maintenance work on an antenna apparently knocked WHYY-FM off the air this morning for about three hours longer than planned.

Listeners looking for the BBC's "World Update" or NPR's "Morning Edition" on 90.9 this morning instead heard crackly music from distant, overlapping signals.

In a note on its website, the station advised that it might be off the air between 11:30 p.m. Monday until 5 a.m. today for maintenance work at the Roxborough antenna farm.

But it was not until 8 a.m. that broadcasting resumed on the FM dial.

WHYY continued broadcasting online during the signal outage.

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