Manufacturers of radios intended to operate in the VHF band, or F1if the manufacturer is not established in the United Kingdom their authorised representatives established in the F2United Kingdom, shall ensure that F3... all radios placed on the market, are 8,33 kHz channel spacing capable.

Air navigation service providers, operators and other users or owners of radios shall ensure that all radio equipment put into service from 17 November 2013, includes the 8,33 kHz channel spacing capability.

F4The CAA shall ensure that aircraft for which the individual certificates of airworthiness or individual flight permits are first issued in the F5United Kingdom or European Union from 17 November 2013 and have a radio equipage requirement, are fitted with radios having the 8,33 kHz channel spacing capability.

Air navigation service providers, operators and other users or owners of radios shall ensure that F6... their radios include the 8,33 kHz channel spacing capability whenever they are subject to radio upgrades.

F7The CAA shall ensure that F8... all radios have the 8,33 kHz channel spacing capability with the exception of ground radios operated by air navigation service providers.

In addition to 8,33 kHz channel spacing capability, the equipment referred to in paragraphs 1-5 shall be able to tune to 25 kHz spaced channels.

Users or owners of ground radios having the 8,33 kHz channel spacing capability shall ensure that the performance of these radios and the transmitter/receiver ground constituent complies with the ICAO standards specified in point 1 of Annex II.

Users or owners of aircraft radio equipment having the 8,33 kHz channel spacing capability shall ensure that the performance of these radios comply with the ICAO standards specified in point 2 of Annex II.