|City of license||Manchester|
|Broadcast area||Greater Manchester|
|Slogan||Your Music, Your Life|
|Frequency||FM: 103.0 MHz
|First air date||2 April 1974 (as Piccadilly Radio)
3 September 1988 (as Key 103)
|Audience share||6.4% (June 2014, RAJAR)|
|Sister stations||Key 2
Originally named Piccadilly Radio, from its set up in 1974, the station was renamed in August 1988 when it was decided to re-brand Piccadilly Radio's FM frequency to the new name Key 103, with a younger target audience in mind. The original Piccadilly Radio continued to broadcast on the AM frequency of 1152 kHz.
The station broadcasts on the analogue frequency 103FM, from a 4 KW transmitter on Saddleworth Moor and broadcasts on DAB Digital Radio from City Tower (formerly Sunley Tower) on the CE Manchester multiplex. Key 103's live broadcast can also be listened to from their website, but only from inside the UK.
The station won three awards at the 2008 Sony radio awards. These consisted of Bronze in the entertainment category for the breakfast show 'Toolan in the Morning', Gold in the competition award for 'Sell Me The Answer' and Gold in the Station of the Year category.
The DAB digital Radio signal is broadcast from transmitters located at Winter Hill and City Tower, Manchester on the CE Manchester multiplex. These transmissions are only aimed towards the city and are not as extensive as the FM frequency.
The majority of programming is broadcast and produced from the Key 103 studios in Castlefield, however some content is shared with its sister stations Metro Radio in Newcastle and Forth 1 in Edinburgh. The Vodafone Big Top 40 is produced by Global Radio at its Capital studios in London for broadcast on 145 commercial radio stations in the UK.
Station jingles, sweepers, and trails are voiced by Mark Chadwick.