Lisnagarvey transmitting station
The Lisnagarvey transmitting station is a facility for mediumwave broadcasting located in the townland of Magherageery, on the southern edge of Lisburn, Northern Ireland (). It is close to Sprucefield shopping centre and about one mile from the middle of Lisburn.

The station was built by the BBC for the Regional Programme to be transmitted to Northern Ireland and it went into service in 1936. It is now owned by Arqiva.

During World War II, a 100 kW shortwave transmitter (Marconi model SWB18) was installed at the station as an alternative to the well-known one at Daventry in England, in case that one should suffer from an enemy attack. It transmitted on 6140 or 6145 kHz, and used the call sign GRW. The shortwave transmitter was taken out of service on 26 May 1946 and was later redeployed at the BBC Far Eastern Relay station at Tebrau, Malaya in January 1951.

The station includes three radio masts, including two standard lattice masts and one Blaw-Knox diamond cantilever vertical radiator. The two standard lattice masts have a wire slung T-antenna suspended between them. The Blaw-Knox radiator is the only one of its kind in Western Europe. The height of a vertical radiator is related to the frequency (or wavelength) of the service transmitted, and for maximum efficiency should be one half of the station's wavelength. Its height was originally , but it was shortened when the station's broadcast frequency was changed.

Similar masts in Europe can be found nowadays only at Lakihegy, Hungary, at Riga, Latvia, and at Vakarel, Bulgaria.

BBC Radio Ulster's service from the transmitter on 1341 kHz ended on Thursday 6 May 2021 at 0930 UTC, as part of the BBC's programme of switching off their medium wave services around the UK.
Q466814
mediumwave
Concept
Q2151232
townland
Concept
Q1828035
Lisburn
LOC
Q26
Northern Ireland
LOC
Q7581441
Sprucefield shopping centre
LOC
Q9531
BBC
ORG
Q4834940
Regional Programme
ORG
Q4795774
Arqiva
ORG
Q641756
Daventry
LOC
Q21
England
LOC
Q1068623
radio masts
Concept
Q804399
Blaw-Knox
Concept
Q11652
frequency
Concept
Q41364
wavelength
Concept
Q366333
Lakihegy
LOC
Q28
Hungary
LOC
Q1798444
Riga
MISC
Q211
Latvia
LOC
Q1781933
Vakarel
MISC
Q219
Bulgaria
LOC
Q2270423
Lisnagarvey transmitting station
Concept
1936-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1936
DATE
6140-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
6140
DATE
6145-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
6145
DATE
1946-05-26T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
26 May 1946
DATE
1951-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
January 1951
DATE
1341-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1341
DATE
2021-05-06T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
6 May 2021
DATE
930-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
0930
DATE
+18^^http://www.w3.org/2001/XMLSchema#decimal
18
NUMBER
commissioned by
country
country
country