Radio bands

Throughout this web log, there are lots of references to the radio bands: UHF, VHF, VLF, etc. For example, KAIRA will receive VHF frequencies, whereas some of the EISCAT radars operate at VHF, where others work at UHF frequencies. This chart is to put them all in perspective with respect to each other.

Abbreviation	Frequency Range	Wavelength Range	Name
ELF	3 to 30 Hz	10,000 to 100,000 km	Extremely low frequency
SLF	30 to 300 Hz	1000 to 10,000 km	Super low frequency
ULF	300 to 3000 Hz	100 to 1000 km	Ultra low frequency
VLF	3 to 30 kHz	10 to 100 km	Very low frequency
LF	30 to 300 kHz	1 to 10 km	Low frequency
MF	300 to 3000 kHz	100 to 1000 m	Medium frequency
HF	3 to 30 MHz	10 to 100 m	High frequency
VHF	30 to 300 MHz	1 to 10 m	Very high frequency
UHF	300 to 3000 MHz	10 to 100 cm	Ultra high frequency
SHF	3 to 30 GHz	1 to 10 cm	Super high frequency
EHF	30 to 300 GHz	1 to 10 mm	Extremely high frequency

The two arrays of KAIRA will operate in the high and low ends of the VHF band. The KAIRA HBA will work from 120-240MHz and the KAIRA LBA will operate from 30-80 MHz. As explained earlier, there is a gap between the two, as this is where FM-radio broadcasts occur, and it is impossible to conduct delicate scientific experiments in this region of the spectrum due to such broadcasts.

Ref: http://en.wikipedia.org/wiki/ITU_Radio_Bands