High Frequency Broadcasting Bands

The shortwave radio corresponds to those frequencies between 3 and 30 MHz, the high frequency spectrum. Different services are allocated at different frequency ranges. For instance, for international broadcasting a number of broadcasting bands were assigned. The table below shows the actual allocation of the high frequency broadcasting bands.

`Meter band`	`kHz band`
`120`	`2300 - 2495`
`90`	`3200 - 3400`
`75`	`3900 - 4000`
`60`	`4750 - 5060`
`49`	`5950 - 6200`
`41`	`7100 - 7300`
`31`	`9500 - 9900`
`25`	`11650 - 12050`
`22`	`13600 - 13800`
`19`	`15100 - 15600`
`16`	`17550 - 17900`
`13`	`21450 - 21850`
`11`	`25600 - 26100`

In 1992, during a conference of the ITU (WARC-92), were allocated bands to complement HF bands yet existing (with the exception of the 15-meter band, that is entirely new). These new bands, shown below, only are allocated officialy for use by HF broadcasting stations in 2007.

`Meter band`	`kHz band`
`49`	`5900 - 5950`
`41`	`7300 - 7350`
`31`	`9400 - 9500`
`25`	`11600 - 11650`
`25`	`12050 - 12100`
`22`	`13570 - 13600`
`22`	`13800 - 13870`
`19`	`15600 - 15800`
`16`	`17480 - 17550`
`15`	`18900 - 19020`

However, it doesn't imply that the stations use only the allocated bands, since several stations are transmitting in out-of-band frequencies.