2014
C1812 : Letterkenny Passive GPS Station
taken 11 years ago, near to Letterkenny, Co Donegal, Ireland

Letterkenny Passive GPS Station
Letterkenny Passive GPS Station Link
(Archive Link
) , located in the grounds of the Church of the Irish Martyrs C1812 : RC Church of the Irish Martyrs, Letterkenny. This station "consists of an earth anchor bar with matching alloy surround and yellow center cap....it is set in a concrete block (600mm.sq.) at surface level." I assume that the centre cap (no sign of anything yellow - either faded or disappeared) is designed for something to fit into it; of all the Irish passive GPS stations this is the only example of such a design. This is a close-up view of the centre cap.
OSI and OSNI Passive GPS Stations
Ordnance Survey Ireland and Ordnance Survey of Northern Ireland passive GPS stations. A list of the OSI stations, including co-ordinates and some precise location details is available at Link
for OSi and use Archive Link
to get OSNI data. Many of the stations are existing trig pillars but others have recently been established.
