Eugene Cullen Murder trial hears from mobile phone expert
A jury has been hearing evidence from a radio frequency engineer in the trial of a 30-year-old accused of murdering a man in Dublin five years ago.
Eugene Cullen of Derry Road, Crumlin has pleaded not guilty to murdering Seamus O' Byrne (27) at Tymon Park North, Tallaght, on March 13, 2009.
The Central Criminal Court has heard that Mr O’Byrne was shot dead by a hooded gunman in front of his girlfriend and child in the driveway of their home.
The prosecution alleges that Mr Cullen was not the gunman but one of four men involved in plotting, planning and executing the murder.
Today, Eamon O’ Gairbhith, who worked for Meteor as a radio frequency engineer, told the court he visited a number of mobile cell sites with gardai on February 16, 2011.
He said he produced some maps to highlight cell site locations and the direction to which they provide coverage and indicate the best server coverage.
Mr O’ Gairbhith said he looked at cell sites including the Long Mile Road, Tymon is Tallaght, Rathfarnham, Crumlin, Shankill and a number of locations in Bray, Co Wicklow.
He told the court that if one cell was full of traffic the handset would be assigned to a different server.
Mr O’ Gairbhith said the further you move from a site the weaker the signal would get and it would “hand over” to a number of other cells as you are travelling.
In his opening speech, Alex Owens SC, prosecuting, told the court that Mr O'Byrne was shot at 8:15 pm as he was leaving his house on the date in question.
He said the prosecution's case was not that Mr Cullen was the gunman. A man from Bray, Garret O'Brien, who has since been convicted, was brought in to do that job.
The trial continues before Mr Justice Barry White and a jury of five men and seven women.