Radio transmission in the 1.7-30 MHz frequency range worldwide. Like AM radio, shortwave signals reflect back from the ionosphere and follow the curvature of the earth. As a result, shortwave (SW ...

With the push to having most of a radio receiver as part of a PC, it might seem odd to have a standalone communication receiver, but [OM0ET] reviews the latest one he picked up, an ATS25.

Kids with shortwave radios always did great in geography ... even if it really looks like a radio. If you made a website with radio stations of the world, would people use it?

Shortwave radio is often used by the military, emergency services and industries that require extremely robust long-distance communication without external infrastructure. But the half-loop ...

In the last few years, the interest in listening to Deutsche Welle radio broadcasts via shortwave has decreased rapidly in North America. As a result Deutsche Welle decided to cease shortwave ...

This is KDDI Corp.’s Yamata Transmitting Station, the nation’s only facility broadcasting shortwave radio programs to overseas listeners. The station started broadcasts on Jan. 1, 1941.

Department of Physiotherapy, Queen's College, Glasgow, UK. Continuous shortwave diathermy is the technique of choice when uniform marked elevation of temperature is required in the deep tissues. This ...

While technical systems are expected to experience only moderate effects during the storm, the solar flare that triggered these CMEs caused a brief shortwave radio blackout over parts of Africa ...