BBC World Service Annual Antarctic Midwinter Broadcast: June 21, 2023

The Shortwave Radio Audio Archive

A live, off-air, half-hour recording of the BBC World Service special Antarctic Midwinter Broadcast on 21 June 2023 beginning at 21:30 UTC. The broadcast, hosted by Cerys Matthews, featured messages and music for the 37 members of the staff of the British Antarctic Survey (BAS) overwintering in Antarctica at the Rothera (Antarctic Peninsula) and King Edward Point and Bird Island (South Georgia) research stations. In addition to personal messages from family and friends, there were interviews with Professor Dame Jane Francis, Director of BAS and Nadia Frontier, a marine biologist from BAS and former winterer. The transmitter came on the air with a test tone (1108 Hz plus harmonics) about a minute before the program started. As sometimes happens, the first few words of the introduction were missed.

The recording is of the transmission first on a frequency of 12005 kHz but after a few minutes it was switched to 13810 kHz due to interference (QRM) on the former frequency. Both frequencies were from the BBC's Woofferton, England, transmitting station. The sender of the 12005 kHz frequency had a registered power of 300 kW with antenna beam 182 degrees, while that for 13810 kHz was registered as 250 kW with an antenna beam of 180 degrees. The transmission was received on a Tecsun PL-880 receiver with a Tecsun AN-03L 7-metre wire antenna outdoors in Hanwell (just outside Fredericton), New Brunswick, Canada, in AM mode with 2.3 kHz RF filtering. Reception on 13810 kHz was quite good with little noise or fading and very good signal strength. The additional parallel frequency of 7255 kHz from Dhabbaya, United Arab Emirates, was not heard.