The Championship on BBC Sport NI
BBC NI's summer GAA coverage continues on Saturday at 1900 BST on BBC2 with exclusive live coverage of the game between Down and Armagh in the Ulster Senior Football Championship.
There will also be live coverage of both semi-finals and the Ulster Championship final.
BBC NI will provide deferred television coverage of the other two Ulster Championship quarter-finals.
These are Tyrone v Monaghan on 5 June and Cavan v Donegal on 12 June.
All matches involving Ulster counties in the All-Ireland quarter-finals, semi-finals and final will be live on television and BBC Radio Ulster MW will have live coverage of all games in the Ulster Championship, and the qualifiers and in the All-Ireland knockout stage which involve Ulster counties.
Shane Glynn, Editor, BBC Sport NI said: "The Ulster Championship is viewed with envy and regarded as the most competitive of the provincial titles to win.
"This year, it's looking really hard to call, with Derry and Donegal showing improved form in the McKenna Cup and National League, Down hoping to build on last year, and of course you can never rule out Armagh and Tyrone.
"We're delighted with the coverage we're going to be offering GAA fans across the summer.
"BBC NI television will have five live matches from the Ulster Championship and the other three games will be shown deferred just a few hours after they finish.
"BBC Radio Ulster will have live coverage of all Ulster Championship games.
"All games at the All-Ireland knock-out stages involving Ulster counties will also be live on TV and radio, while Radio Ulster will also have live coverage of the qualifiers involving Ulster teams.
"It's all set for an exciting summer of GAA action, and BBC NI will take fans right to the heart of it."
Páraic Duffy, GAA Director General said: "It is hard to believe that championship action is upon us again and after the excitement of last year's competition GAA followers everywhere will be looking forward to the activity planned for the coming months.
"Down's run to last year's final helped to illuminate the 2010 competition and it will be interesting to monitor how they progress in the ultra competitive Ulster championship.
"This year a slightly smaller number of games will be broadcast live across all television platforms in an effort to free up some time slots and assist our clubs in the organisation of their competitions.
"Nonetheless I look forward to the in-depth analysis which will accompany the games on BBC NI, BBC Radio Ulster and BBC online all of which will add to supporters' enjoyment of the games."
Austin O'Callaghan will present the action live throughout the Championship and will be joined by a host of former Gaelic stars throughout the series and Mark Sidebottom will be in the commentary box with guest commentators joining him during the games.
On the sideline former GAA stars will join Thomas Kane to offer to expert analysis on the action and Thomas will present a round up of all the action from the Ulster Minor championship.
Denise Watson will be at the grounds to reflect the colour and passion amongst the crowd for the fans watching from home.
Sportsound on BBC Radio Ulster MW will also broadcast live coverage of all the games in the Ulster Championship.
Owen McConnon will be in the commentary box with analysis during the season from Adrian McGuckin, Brian Canavan, Paddy Bradley and Oisin McConville. Listeners can contact the programme by texting their views to 81771.
Fans can also keep right up to date with all the latest news, reports, analysis and reaction on The Championship's own dedicated online site at bbc.co.uk/ni/championship which also includes details of the comment board and a picture gallery.
Log onto the website for live audio streaming of all the games available on BBC Radio Ulster.
Fans can also follow all the action on the dedicated Facebook and Twitter pages and can send their thoughts on the championship blog. Log onto bbc.co.uk/sportni for more details.
Television details (all BBC Two)
28 May: Armagh v Down (1930) Live and exclusive coverage from 1900
5 June: Tyrone v Monaghan (1530) Deferred showing at 1900
12 June: Cavan v Donegal (1530) Deferred showing at 1900
19 June: Ulster SFC semi-final (1400) Live coverage from 1345
26 June: Ulster SFC semi-final (1530) Live coverage from 1515
17 July: Ulster SFC final (1600) Live coverage from 1545