Robert J Morton
Robert J Morton |
A brief outline of the short wave (HF) amateur radio bands is shown below. These may have been change since I wrote this and allocations may differ slightly between global regions. The colours for daytime propagation (lower) and night time propagation (upper) have the same meanings as on my propagation diagram.
 | 160 Metre Band (also called 'Top Band'): 1810-1850 kHz (40 kHz wide). Normally local, but long distance possible during autumn & winter nights. |
 | 80 Metre Band: 3500-3800 kHz (300 kHz wide). Local during day, long distance at night all year round. |
 | 40 Metre Band: 7000-7100 kHz (100 kHz wide). World-wide at night. <1000 miles during day. 7.000 to 7.045 MHz allocated to CW 7.045 to 7.100 MHz allocated to LSB |
 | 30 Metre Band: 10100-10150 kHz (only 50 kHz wide). A 'transitional' band, ie it straddles the boundary between the 'night time only' and '24-hour'. |
 | 20 Metre Band: 14000-14350 kHz (350 kHz wide). World-wide day/early evening. 24-hour during solar peaks. 14.0000 to 14.0700 CW 14.0700 to 14.1000 USB 14.10 to 14.1120 CW 14.1120 to 14. USB |
 | 17 Metre Band: 18068-18168 kHz (100 kHz wide). World-wide, less crowded than other bands. |
 | 15 Metre Band: 21000-21450 kHz (450 kHz wide). Out-performs 20 metre band during solar peaks. |
 | 12 Metre Band: 24890-24990 kHz (100 kHz wide). Allocated in 1979. Daytime during solar peaks. |
