Call for the recording of the entire LW band on Dec 31st (closure of 243 kHz, Kalundborg, Denmark)
Dear colleagues,
As the LW transmitter in Kalundborg will stop broadcasting on 243kHz on Dec 31st (14.00-17.00) UTC, the COHIRADIA team will make broadband recordings of the full LW band with high resolution SDRs . However, none of us is located close to the transmitter so that SNR will be limited. We are therefore searching for a volunteer in or close to Denmark, who is equipped with a suitable SDR (operating down to 150 kHz, >= 12bit resolution, ability to record broadband IQ files), a good antenna and willing to support us. This would be a unique opportunity to conserve the LW band with high quality before one of its most famous transmitters goes off air forever.
The files are planned to be made available for the public on COHIRADIA at www.radiuomuseum.org. They can then be downloaded and played back and tuned through either digitally with usual SDR software or also on analogue AM radios when using a suitable hardware (for technical details see https://www.radiomuseum.org/dsp_cohiradia.cfm).
This will be a really unique opportunity given that Queen Margrethe’s New Year’s speech will be broadcast live, as reported in the posting by the Kalundborg Langbølgesender FB group on 19th Dec.
If you are interested please contact me directly by email: hermann.scharfetter@gmail.com.
Hermann Scharfetter (2023-12-20)