Shortwave Broadcast Bands

Band Frequency range (MHz) Remarks
120 m
Mostly used locally in tropical regions, with time stations at 2.5 MHz. Although this is regarded as shortwave, it is a MF band.

90 m
Mostly used locally in tropical regions, with limited long-distance reception at night. A notable example of a station using this band is Canadian time station CHU on 3.33 MHz.

75 m
Mostly used in the Eastern Hemisphere after dark; not widely received in North and South America. Shared with the North American amateur radio 80 m band.

60 m
Mostly used locally in tropical regions, especially Brazil, although widely usable at night. Time stations use 5 MHz.

49 m
Good year-round night band; daytime (long distance) reception poor

41 m
Reception varies by region—reasonably good night reception, but few transmitters in this band target North America. According to the WRC-03 Decisions on HF broadcasting,[2] in International Telecommunication Union regions 1 and 3, the segment 7.1–7.2 MHz is reserved for amateur radio use and there are no new broadcasting allocations in this portion of the band. 7.35–7.4 MHz is newly allocated; in Regions 1 and 3, 7.4–7.45 MHz was also allocated effective March 29, 2009. In Region 2, 7.2–7.3 MHz is part of the amateur radio 40 m band.

31 m
Most heavily used band. Good year-round night band; seasonal during the day, with best reception in winter. Time stations are clustered around 10 MHz.

25 m
Generally best during summer and the period before and after sunset year-round

22 m
Substantially used in Eurasia. Similar to the 19 m band; best in summer.

19 m
Day reception good, night reception variable; best during summer. Time stations such as WWV use 15 MHz.

16 m
Day reception good; night reception varies seasonally, with summer best.

15 m
Lightly utilized; may become a Digital Radio Mondiale (DRM) band in future

13 m
Erratic daytime reception, with very little night reception. Similar to 11 metres, but long-distance daytime broadcasting (best on north–south paths) keeps this band active in the Asia-Pacific region.

11 m
Seldom used. Daytime reception is poor in the low solar cycle, but potentially excellent when the solar cycle (generally indicated by the number of sunspots) is high. Nighttime reception nonexistent, except for local groundwave propagation. DRM has proposed that this band be used for local digital shortwave broadcasts, testing the concept in Mexico City in 2005. Citizens band (CB) allocation in most countries, is slightly higher in frequency than the broadcasting 11m band. There are reports of pirate CB radio users operating equipment on frequencies as low as 25.615 MHz. In the United States, this band is also shared with Remote Pickup Units (RPUs), from 25.87 to 26.1 MHz in FM mode.