|Broadcast area||Greater Manchester|
|Slogan||All the biggest hits - All day long|
|Frequency||FM: 103.0 MHz
|First air date||2 April 1974 (as Piccadilly Radio)
3 September 1988 (as Key 103)
|Sister stations||Key 2
Originally named Piccadilly Radio, from its setup 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. In 1990 the station decided to recognise its heritage and incorporated the Piccadilly name back in, with the re-brand to Piccadilly Key 103 but, during the 1990s, the Piccadilly element of its name was eventually dropped. The original Piccadilly Radio, re-branded to Piccadilly Gold in 1990 and then merged with North of England-based AM frequency stations in 1998 to create a network called Magic AM, has now been known as Key 2 since 2014 on the AM frequency of 1152 kHz as well as DAB.
The station broadcasts on the analogue frequency 103 FM, from a transmitter on high ground to the North and East of the region. Broadcasts started from here at the station's launch in 1974. The station also broadcasts on DAB across the region.
Previous presenters include Chris Evans, Mike Sweeney, Steve Penk, James H Reeve, Andy Peebles, Gary Davies, Tim Grundy, Timmy Mallett, Pete Mitchell, Geoff Lloyd, Mark Radcliffe, James Stannage, Stu Allan, Nick Robinson and Karl Pilkington.
The DAB signal is broadcast from transmitters located at Winter Hill and City Tower, Manchester on the CE Manchester multiplex. With the addition of Sutton Common, near Macclesfield, the DAB signal has a reliable coverage area that includes Greater Manchester, South Lancashire, most of Cheshire, parts of North East Wales and Merseyside, with much better reception than the FM frequency can provide as 103.0 suffers from co-channel interference from other stations nearby.
In May 2016, two additional digital transmitters were launched at Littleborough and Saddleworth.
The majority of programming – local and networked - is produced and broadcast from Key 103's studios in Castlefield, Manchester.
Key 103 broadcasts local news bulletins hourly from 6 am to 7 pm on weekdays, from 7 am to 1 pm on Saturdays and Sundays. Headlines are broadcast on the half hour during weekday breakfast and drivetime shows, alongside sport and traffic bulletins.
- "More presenter changes across Bauer's City stations – RadioToday". RadioToday.co.uk. Retrieved 17 August 2017.