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ALEXANDRA PALACE - North London
Stations
Frequencies
Power e.r.p.
Pol'n
RADIO



ILR Haringay - London Greek Radio
103.3 MHz
0.05 kW
V
ILR North London - Choice FM
107.1 MHz
0.1 kW
V
DAB - BBC DAB
225.64 (Block 12B)
3.2 kW
V
DAB - Digital One
222.06 (Block 11D)
2.0 kW
V
DAB - CE Digital
227.36  (Block 12C)
0.25 kW
V
DAB - Switch London
223.93 (Block 12A)
0.1 kW
V
DAB - DRg
218.64 (Block 11B)
0.2 kW
V
TELEVISION



Analogue BBC 1/2, ITV, CH4
58 / 64 , 61, 54
0.07 kW
H
DTT
none as yet
-
-

ALEXANDRA PALACE

Alexandra Palace is the historic transmitter site where the BBC first carried out its experimental television test transmissions from 1936 to 1937.  This is when the testing of two television systems took place between John Logie Baird's 240 line mechanical system and Marconi/EMI's 405 line electronic scan system.   The Marconi/EMI system won the support of the BBC, and thus the Baird system was discontinued in February 1937.  BBC Television programmes continued from 1937 until September 1939 when war broke out.  The Second World War finished in 1945 and television broadcasts recommenced in June 1946.

The television signals from Alexandra Palace in the 1940's were broadcast on  41.5 MHz (Band I v.h.f) with a power of 3 kW.

The 405 line television transmissions from Ally Pally, as the famous station became known, were later closed and transferred to Crystal Palace. The 405 line television system as a whole  was closed down in the early 1980's and today the famous building is home to a low power u.h.f. analogue PAL colour television relay transmitter - which itself may be closed down with the arrival of the digital terrestrial television (DTT) transmission system!

Alexandra Palace is also home to DAB digital radio transmitters, and two low power local radio stations - using 103.3 MHz FM (LGR - London Greek Radio) and 107.1 MHz FM (Choice FM).

Alexandra Palace transmitting station


Alexandra Palace transmitting station


Alexandra Palace transmitting station


Alexandra Palace

Photos By Prof. Tony Davies
November 2005


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