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2. List of shortwave radio broadcasters - Wikipedia

   en.wikipedia.org/wiki/List_of_shortwave_radio...

   Transmitted via Lahti radio station from 1938 to 1948, Pori shortwave station from 1948 to 1987 and finally then new Pori's shortwave center in Preiviiki district from 1987 to the end of 2006. Known before early 1970s as shortwave service of Finnish Broadcasting Company. Scandinavian Weekend Radio: 2000 Yes France Radio France Internationale ...

3. Shortwave bands - Wikipedia

   en.wikipedia.org/wiki/Shortwave_bands

   Shortwave bands are frequency allocations for use within the shortwave radio spectrum (the upper medium frequency [MF] band and all of the high frequency [HF] band). Radio waves in these frequency ranges can be used for very long distance (transcontinental) communication because they can reflect off layers of charged particles in the ionosphere and return to Earth beyond the horizon, a ...

4. Shortwave radio - Wikipedia

   en.wikipedia.org/wiki/Shortwave_radio

   Shortwave radio is radio transmission using radio frequencies in the shortwave bands (SW). There is no official definition of the band range, but it always includes all of the high frequency band (HF) , which extends from 3 to 30 MHz (100 (exactly 99.930819333) to 10 (exactly 9.9930819333) meters); above the medium frequency band (MF) , to the ...

5. List of European short wave transmitters - Wikipedia

   en.wikipedia.org/wiki/List_of_European_short...

   Frequency (MHz) Program Transmitter site Time, UTC Days Language Power (kW) Az Remarks 3.965 Radio France Internationale (DRM) Issoudun 01:00-00:57 1234567 French (Digital) 1 ND RFI 3.975 6160 Shortwave AM Radio Winsen 16:00-18:00 .234567 English 1 ND 3.985 SRF Schweizer Radio Kall-Krekel 16:00-17:00 1234567 German 1 ND 3.995 HCJB Deutsch

6. Shortwave listening - Wikipedia

   en.wikipedia.org/wiki/Shortwave_listening

   United States shortwave broadcasters began transmitting popular radio programs in an attempt to attract foreign audiences. During the 1930s, new shortwave receivers appeared on the market as well as popular shortwave magazines and clubs. Shortwave stations often offered unique QSL cards for DXers who send reception reports.

7. Shortwave broadcasting in the United States - Wikipedia

   en.wikipedia.org/wiki/Shortwave_broadcasting_in...

   Shortwave broadcasting in the United States allows private ownership of commercial and non-commercial shortwave stations that are not relays of existing AM/MW or FM radio stations, as are common in Africa, Europe, Asia, Oceania except Australia and Latin America. In addition to private broadcasters, the United States also has government ...

8. If China declares war, these ham radio enthusiasts could be ...

   www.aol.com/news/china-declares-war-ham-radio...

   If cell towers are down and internet cables have been cut, the ability of shortwave radio frequencies to transmit long-distance messages could become crucial for civilians and officials alike.

9. 20-meter band - Wikipedia

   en.wikipedia.org/wiki/20-meter_band

   The 20-meter or 14-MHz amateur radio band is a portion of the shortwave radio spectrum, comprising frequencies stretching from 14.000 MHz to 14.350 MHz. [1] The 20-meter band is widely considered among the best for long-distance communication , and is one of the most popular—and crowded—during contests. [2]