The following list contains the aeronautical radio beacons that were active in Belgium in the mid of the 1950s. All information is outdated and may not be used for navigational purposes.
At this time, there were mainly Non-Directional Beacons (NDB). At Brussels Airport there was still a Range beacon. Also here, a VOR was in test operation and runway 25 had an ILS.
Title image: Sabena DC-3 OO-AUN. Source: ETH-Bibliothek Zürich, Bildarchiv/Stiftung Luftbild Schweiz / Fotograf: Swissair / LBS_SR01-04433-01, License: CC BY-SA 4.0
Radio beacons and airways in 1955

English Channel, Oostende, Chievres (Source: DoD)

Ghent to Liège Bierset (Source: DoD)

Enlargement: Brussels (Source: DoD)

Florennes, Liège Bierset, Luxembourg (Source: DoD)
Explanations

Abbreviations
approx. | approximately | |
civ | civil | civil operator |
GP | Glide path | Glide path transmitter |
ILS | Instrument Landing System | (Approach and landing aid) |
IM | Inner Marker | Marker beacon just in front the runway |
kHz | Kilohertz | (Unit for frequency) |
L | Locator | Non-directional beacon for the approach |
LLZ | Localizer | Localizer transmitter |
LMM | Locator Middle Marker | Combination of Middle Marker and Locator |
LOM | Locator Outer Marker | Combination of Outer Marker and Locator |
m | Meter | (Unit for length) |
MHz | Megahertz | (Unit for frequency) |
mil | military | military operator |
MM | Middle Marker | Marker beacon |
NDB | Non-directional beacon | Non-directional beacon on long or medium waves |
NM | Nautical Miles | (Unit for length) |
OM | Outer Marker | Marker beacon |
PRMG | ПРМГ Посадочная радиомаячная группа | Soviet / russian military instrument landing system |
RSBN | РСБН Rадиотехническая система ближней навигации | Soviet / russian military radio navigation system |
SBA | Standard Beam Approach | Approach system, Lorenz system, predecessor of the ILS |
THR | Threshold | Runway threshold (most often with number of runway) |
transf. | transformed | Coordinates were converted from a different reference system, therefore there may be deviations. |
VAR | Visual-Aural Rnange | |
VOR | VHF Omnidirectional Radio Range | |
W | Watt | (Unit for power) |
WGS84 | World Geodetic System 1984 | (geospatial reference system, GPS coordinates) |
Directory
For historical information only, do not use for navigation or aviation purposes!
Antwerpen: Deurne Airport
Antwerpen: L (civ)
N5112 E00427 (approx.)
Google MapsWW, 375
Operated on request.
Antwerpen: NDB (civ)
N5111 E00429 (approx.)
Google MapsONW, 355 kHz
Approx. 400 m east of the field.
Barvaux: NDBN5023 E00529 (approx.)
Google MapsRX, 250 kHz
Beauvechain: Air Base (Base aérienne de Beauvechain, Kwartier basis luitenant-kolonel vlieger Charles Roman)
Beauvechain: NDB (BAF)
N5046 E00448 (approx.)
Google MapsVK, 341.5 kHz, 100 W
Brussels: Airport (National, Zaventem, Melsbroek, Luchthaven Brussel-Nationaal, Aéroport Bruxelles-National)
Brüssel: Haren (civ)
N5053 E00426 (approx.), 067°/2.3 NM to THR 07
Google MapsONB, 393 kHz
At the former Haren/Evere airfield.
Brüssel: VOR (civ)
N5054 E00428 (approx.)
Google MapsTB, 114.5 MHz
On test.
Runway 25:
Brüssel: Range/Z Marker (civ)
N5059 E00440 (approx.), 247/7.4 NM to THR 25
Google MapsRange: BR, 254 kHz
Z Marker: 75 MHz
Brüssel: ILS
BR, 110.3 MHz
Brüssel: LOM (civ)
N5057 E00435 (approx.), 247°/3.8 NM to THR 25
Google MapsLocator: OB, 293 kHz
Outer Marker: 75 MHz
Brüssel: LMM (civ)
N5055 E00431 (approx.), 247°/0.5 NM to THR 25
Google MapsLocator: MM, 308/548 kHz
Middle Marker: 75 MHz
Chièvres: Air Base (Base aérienne de Chièvres, Caserne Daumerie)
Chièvres: NDB (BAF)
N5035 E00349 (approx.)
Google MapsCS, 267.5 kHz, 90 W
Dender: NDBN5053 E00402 (approx.)
Google MapsDU, 520 kHz
For historical information only, do not use for navigation or aviation purposes!
Florennes: Air Base (Base aérienne de Florennes, Quartier base Offenbach)
Florennes: NDBN5015 E00444 (approx.)
Google MapsONF, 212 kHz, 300 W
Kleine Brogel: Air Base (Vliegbasis Kleine-Brogel, Base aérienne de Kleine-Brogel, Basis generaal-majoor vlieger graaf Ivan du Monceau de Bergendal)
Kleine Brogel: NDB (BAF)
N5119 E00528 (approx.)
Google MapsONT, 449 kHz, 200 W
Koksijde: Air Base (Vliegbasis Koksijde, Vliegbasis adjudent vlieger Frans Allaeys)
Koksijde: NDB (BAF)
N5106 E00239 (approx.), 111°/2.0
Google MapsFN, 326 kHz, 100 W
Liège Bierset: Airfield (Base aérienne de Bierset, Aéroport de Liège, Base aérienne et caserne De Cubber)
Liège Bierset: NDBN5041 E00532 (approx.)
Google MapsONL, 240 kHz, 50 W
Machelan: NDBN5058 E00330 (approx.)
Google MapsML, 262 kHz
Oostende: Airport
Oostende: NDBN5112 E00253 (approx.), 266°/0.39 NM
Google MapsONO, 224.5 kHz
On request to Tower or ATCC Brussels.
St. Hubert: Airfield
St. Hubert: NDBN5002 E00524 (approx.)
Google MapsONS, 323 kHz
On request to Air Traffic Control
For historical information only, do not use for navigation or aviation purposes!