The device may help boost early detection of HFrEF for people living in low-resource settings where echo is scarce.

Rachel Burden and Steffan Powell with unique stories, and the biggest news and sport. Dotun Adebayo and guests with your calls on the World Football Phone In. Plus news and discussion through the ...

Abstract: The dense radio-frequency interference (RFI) distributed on the spectrum in the high-frequency band greatly degrades the performance of radio systems and makes it urgent to find an effective ...

Abstract: The multi-frequency multipath observations of temporal variations in the Doppler spectra and signal amplitudes of HF radio waves reflected from the ionosphere, which accompanied ionospheric ...

Bouvet Island sits at the edge of the world. It is frozen, uninhabited, and almost impossible to access. Fewer people have set foot there than in space. That level of remoteness is exactly what makes ...

This is BBC Radio 5 Sports Extra - bringing you even more live sports commentaries. This is BBC Radio 5 Sports Extra - bringing you even more live commentaries from the world's greatest sporting ...

W5JON will be active again as V47JA from Saint Kitts Island, IOTA NA-104, 17 - 23 November 2025. He will operate on 160 - 6 m (Including 60m), SSB, FT8. Your vacation will be filled with amazing ...