BBC World Service Annual Antarctic Midwinter Broadcast: June 21, 2018

New Bransfield House, Rothera Research Station, British Antarctic Territory (BAS Photo)

Two live, off-air, half-hour recordings of the BBC World Service special Antarctic Midwinter Broadcast on 21 June 2018 beginning at 21:30 UTC. The broadcast features special messages and music for the staff of the British Antarctic Survey overwintering in Antarctica.

The first recording is of the transmission on a frequency of 7360 kHz from the BBC's Ascension Island relay station (250 kW transmitter power, antenna beam 207 degrees). The transmission was received on a Tecsun PL-880 receiver with a Tecsun AN-03L 7-metre wire antenna in Hanwell (just outside Fredericton), New Brunswick, Canada, in AM mode with 5 kHz RF filtering. Reception was fairly good, albeit a bit noisy and with noticeable transmitter hum.

The second recording is of the transmission on a frequency of 5985 kHz from the BBC's Woofferton, England, transmitting station (250 kW transmitter power, antenna beam 184 degrees). The broadcast was received by the Web-interface wideband software-defined radio at the University of Twente in Enschede, The Netherlands, with a "Mini-Whip" antenna in synchronous AM mode with 5.08 kHz RF filtering. Reception of the broadcast was very good.

The program started slightly late for both transmissions with parts of the first one or two sentences missing. The program actually starts with "This is the BBC World Service in London calling Antarctica. Welcome to the Antarctic Midwinter Broadcast, a special ..."