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Home > Your Frequencies  > Ground/Ground to Air > 400 - 450 MHz

Register of Frequencies: 400 - 450 MHz Non-airborne

Centre Frequency or Lower edge of Band(MHz)	Upper edge of Band(MHz)	Maximum Effective Radiated Power (ERP)	Maximum Bandwidth	Restrictions and Notes All frequencies are available in England, Scotland, Wales, Northern Ireland, the Isle of Man and Channel Islands except where stated otherwise	Typical Applications
425.3125	425.5625	25 W	50 kHz	Except in parts of south west Wales and the Outer Hebrides	Temporary point-to-point audio links.
427.7625	428.0125	25 W	100 kHz	Not available in south west Wales	Wide area Talkback.
442.2625	442.5125	25 W	100 kHz	Except for individual channels in London and parts of Berkshire, Surrey, Buckingham and Hertfordshire	Wide area Talkback.
446.4250	446.5125	5W	50 kHz	A maximum ERP of 25 Watts is available within the M25.	Location duplex Talkback - Base Tx (Portable Tx in 467 MHz band).
446.5125	447.5125	25 W	100 kHz	Available for short term use apart from specific channels at locations in Greater London, Gloucestershire, the north Yorkshire coast, Cornwall and much of Lancashire.	Temporary point-to-point audio links. Simplex Talkback and Communications. Location duplex Talkback - Base Tx (Portable Tx in 467 MHz band). Wide area duplex Talkback - Base Tx.