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  2. 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 ...

  3. Reception report - Wikipedia

    en.wikipedia.org/wiki/Reception_report

    To begin, report the frequency, date and time the station was heard. For medium-wave (AM) stations, the time should be that of the time zone in which the station is located. Thus, if a listener hears stations from the Eastern time zone of North America (such as Ontario and New York), EST or EDT should be given (depending on the time of year).

  4. Template:Multi-frequency signaling tones - Wikipedia

    en.wikipedia.org/wiki/Template:Multi-frequency...

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  5. WWRB - Wikipedia

    en.wikipedia.org/wiki/WWRB

    Global-IV: 2012: Leased for a shortwave propagation study [5] WWRB was last listed on the FCC frequency schedule in northern Summer 2021: 5.05 MHz from 2200-1300 UTC. [6] In February 2023, the 5.05 frequency was reallocated to WRMI, where it is used by Ted Randall (former engineer of 5.085 WTWW) for his "WRMI Legends" oldies service.

  6. 15-meter band - Wikipedia

    en.wikipedia.org/wiki/15-meter_band

    The 15-meter band (also called the 21-MHz band or 15 meters) is an amateur radio frequency band spanning the shortwave spectrum from 21 to 21.45 MHz. The band is suitable for amateur long-distance communications, and such use is permitted in nearly all countries.

  7. List of shortwave radio broadcasters - Wikipedia

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

    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

  8. Template:Frequency list - Wikipedia

    en.wikipedia.org/wiki/Template:Frequency_list

    To change this template's initial visibility, the |state= parameter may be used: {{Frequency list | state = collapsed}} will show the template collapsed, i.e. hidden apart from its title bar. {{Frequency list | state = expanded}} will show the template expanded, i.e. fully visible.

  9. R-S-T system - Wikipedia

    en.wikipedia.org/wiki/R-S-T_system

    The R-S-T system is used by amateur radio operators, shortwave listeners, and other radio hobbyists to exchange information about the quality of a radio signal being received. The code is a three digit number, with one digit each for conveying an assessment of the signal's readability, strength, and tone.