WNTN (1550 kHz) is a radio station licensed to Cambridge, Massachusetts, serving the Greater Boston area. It is owned by Delta Communications. WNTN is powered at 6,700 watts by day. But because AM 1550 is a Canadian clear channel frequency, WNTN must significantly reduce power at night to three watts. It uses a non-directional antenna at all times. The transmitter is on Birch Street at Bay State Road in Cambridge, while the studios and offices are on Fremont Street in Needham.