Radio beacons in the Republic of Ireland in the 1950s

NDB, Range, ILS

For historical information only, do not use for navigation or aviation purposes!

The following list contains the aeronautical radio beacons that were active in the Republic of Ireland in the mid of the 1950s. This compilation is probably incomplete. All information is outdated and may not be used for navigational purposes.

At this time there were mainly non-directional beacons (NDB). But at Shannon Airport, which was of great importance for North Atlantic air traffic, a VOR was already in test operation. The airports of Dublin and Shannon were equipped with Instrument Landing Systems (ILS).

Radio beacons and airways

Radio beacons Ireland, 1955
Radio beacons Ireland (Source: DoD)

Explanations

Abbreviations

approx.approximately
ILSInstrument Landing System(Approach and landing aid)
IMInner MarkerMarker beacon just in front the runway
kHzKilohertz(Unit for frequency)
LLocatorNon-directional beacon for the approach
LMMLocator Middle MarkerCombination of Middle Marker and Locator
LOMLocator Outer MarkerCombination of Outer Marker and Locator
mMeter(Unit for length)
MHzMegahertz(Unit for frequency)
MMMiddle MarkerMarker beacon, usually about 1 km from the runway
NDBNon-directional beaconNon-directional beacon on long or medium waves
NMNautical Miles(Unit for length)
OMOuter MarkerMarker beacon, usually about 7 km from the runway
SBAStandard Beam ApproachApproach system, Lorenz system, predecessor of the ILS
THRThresholdRunway threshold (most often with number of runway)
VORVHF Omnidirectional Radio Range
WWatt(Unit for power)
WGS84World Geodetic System 1984(geospatial reference system, GPS coordinates)

Directory


For historical information only, do not use for navigation or aviation purposes!

Dublin: Airport (Aerfort Bhaile Átha Cliath)


Runway 24:
Dublin: Rush NDB
N5331 W00607 (approx.), 238°/6.5 NM to THR 24 Google Maps
DW, 326 kHz, 30 W
(Ros Eó, An Ros)
Dublin: ILS 24
DW, 110.3 MHz
Operated at aerodrome times.
Dublin: LOM 24
238°/3.74 NM to THR 24
Locator: OD, 343 kHz
Outer Marker: Dashes, 75 MHz
Dublin: LMM 24
238°/0.67 NM to THR 24
Locator: C, 362 kHz
Outer Marker: Dot Dash, 75 MHz
Dublin: IM 24
Dots, 75 MHz
ILS approach to Dublin Airport, Ireland, in 1954
ILS approach to Dublin in 1954 - There are three Non-Directional Beacons "DW", "OD" and "C" on the approach course. (Source: DoD)
Map of Dublin Airport, 1954
Dublin Airport in 1954 - The Middle Marker (MM) is located 0.6 nautical miles from the field, the Inner Marker (IM) is located directly at the beginning of runway 24. (Source: DoD)

Eagle Island: NDB
N5417 W01005 (approx.) Google Maps
GL, 308 kHz
Operated H+00 and every 6 minutes.

Kilkee: Marker
N5241 W00939 (approx.) Google Maps
Dashes, 75 MHz

Limerick Junction: Marker
N5230 W00813 (approx.) Google Maps
Dashes, 75 MHz

Mizzen Head: NDB
N5127 W00949 (approx.) Google Maps
MZ, 308 kHz
Operated H+01 and every 6 minutes.

Shannon: Airport (Aerfort na Sionna, Limerick)


Shannon: Range/Z Marker
N5242 W00849 (approx.), 284°/3.5 NM to field Google Maps
Range: SA, 352 kHz, 75 W
Z Marker: 75 MHz
Was located near Bunratty. The four predefined courses to the Range were: 014°, 104°, 209° and 307°.
Shannon: VOR
N5241 W00855 (approx.) Google Maps
VSA, 113.3 MHz
On test.
Runway 23:
Shannon: NDB
N5250 W00845 (approx.), 229°/9.3 NM to field Google Maps
EJT, 387 kHz, 25 W
Was located north of Lough Cullaunyheeda, near Tyrera.
Shannon: ILS 23
SA, 110.3 MHz
To runway 23 (229°)
Shannon: LOM 23
N5246 W00851 (approx.), 229°/3.82 NM to THR 23 Google Maps
Locator: OL, 339 kHz
Outer Marker: Dashes, 75 MHz
Was located southwest of Fenloe Lake.
Shannon: LMM 23
N5243 W00854 (approx.), 229°/0.56 NM to THR 23 Google Maps
Locator: S, 316 kHz
Middle Marker: Dot-Dash, 75 MHz
Shannon: IM 23
Dots, 75 MHz
ILS approach to Shannon, Ireland, 1954
ILS approach to Shannon, 1954 - On the approach course for runway 23, which is closed today, there are three non-directional radio beacons (NDB) "EJT", "OL" and "S". (Source: DoD)
Map of Shannon Airport, Ireland, 1954
Shannon Airport, 1954 - The Middle Marker (MM) is at the beginning of the approach lighting, the Inner Marker (IM) directly at the beginning of runway 23. (Source: DoD)

For historical information only, do not use for navigation or aviation purposes!

Tuskar Rock Lighthouse: NDB
N5212 W00612 (approx.) Google Maps
TR, 296.5 kHz
Operated H+00 and every 6 minutes.

For historical information only, do not use for navigation or aviation purposes!

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