BT Tower - Ofcom TX Visualiser

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BT Tower

Central London · BBC National DAB · 12B / 225.648 MHz

Antenna pattern

Antenna pattern

ERP field: In-Use ERP Total = 800 W

0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° N E S W 0°: 0.5 dB attenuation; relative ERP 89.1% of peak 10°: 0.2 dB attenuation; relative ERP 95.5% of peak 20°: 0 dB attenuation; relative ERP 100% of peak 30°: 0 dB attenuation; relative ERP 100% of peak 40°: 0 dB attenuation; relative ERP 100% of peak 50°: 0.4 dB attenuation; relative ERP 91.2% of peak 60°: 0.8 dB attenuation; relative ERP 83.2% of peak 70°: 1.3 dB attenuation; relative ERP 74.1% of peak 80°: 2 dB attenuation; relative ERP 63.1% of peak 90°: 3 dB attenuation; relative ERP 50.1% of peak 100°: 3.8 dB attenuation; relative ERP 41.7% of peak 110°: 4.9 dB attenuation; relative ERP 32.4% of peak 120°: 6 dB attenuation; relative ERP 25.1% of peak 130°: 6.4 dB attenuation; relative ERP 22.9% of peak 140°: 6.7 dB attenuation; relative ERP 21.4% of peak 150°: 7 dB attenuation; relative ERP 20% of peak 160°: 7 dB attenuation; relative ERP 20% of peak 170°: 7 dB attenuation; relative ERP 20% of peak 180°: 6.7 dB attenuation; relative ERP 21.4% of peak 190°: 6.4 dB attenuation; relative ERP 22.9% of peak 200°: 6 dB attenuation; relative ERP 25.1% of peak 210°: 4.9 dB attenuation; relative ERP 32.4% of peak 220°: 3.8 dB attenuation; relative ERP 41.7% of peak 230°: 3 dB attenuation; relative ERP 50.1% of peak 240°: 2 dB attenuation; relative ERP 63.1% of peak 250°: 1.2 dB attenuation; relative ERP 75.9% of peak 260°: 0.7 dB attenuation; relative ERP 85.1% of peak 270°: 0.4 dB attenuation; relative ERP 91.2% of peak 280°: 0 dB attenuation; relative ERP 100% of peak 290°: 0 dB attenuation; relative ERP 100% of peak 300°: 0 dB attenuation; relative ERP 100% of peak 310°: 0.3 dB attenuation; relative ERP 93.3% of peak 320°: 0.5 dB attenuation; relative ERP 89.1% of peak 330°: 0.8 dB attenuation; relative ERP 83.2% of peak 340°: 1 dB attenuation; relative ERP 79.4% of peak 350°: 0.8 dB attenuation; relative ERP 83.2% of peak

Pattern values are treated as dB attenuation. The outer ring is the lowest attenuation / strongest direction; radius uses field-strength scaling: 10−dB/20.

Best bearing(s): 20°, 30°, 40°, 280°, 290°, 300° at 0 dB attenuation.

Deepest restriction(s): 150°, 160°, 170° at 7 dB attenuation.

Parameters

Date 21/03/2012
Ensemble BBC National DAB
Licence BBCD000001
mb21 BT Tower
Ensemble Area UK
EID CE15
Transmitter Area Central London
Site BT Tower
Freq. 225.648
Block 12B
TII Main Id (Hex) 08
TII Sub Id (Hex) 17
NGR TQ29228193
Longitude/Latitude 000W08 20 51N31 17
Lat 51.521514
Long -0.138879
Site Height 27
In-Use Ae Ht 192
In-Use ERP Total 800 W
Dir Max ERP 340°

Services listed for this ensemble row

TypeService labelSIdLSN
Audio BBC Radio 1 C221
Audio BBC Radio 2 C222
Audio BBC Radio 3 C223
Audio BBC Radio 4 C224
Audio Radio 5 Live C225
Audio Radio 5 Extra C228
Audio BBC Radio 6Music C22B
Audio BBC Radio 1Xtra C22A
Audio BBC WorldService C238
Audio BBC AsianNetwork C236
Audio BBC Radio 4Extra C22C
Audio BBC Radio1Anthms C22D
Audio BBC Radio1Dance C229
Audio BBC Radio3Unwind C22E
Data BBC Guide E1C79E5E
Data BBC Travel E1C79E60

Pattern values

Antenna pattern

0°10°20°30°40°50°60°70°80°90°100°110°120°130°140°150°160°170°180°190°200°210°220°230°240°250°260°270°280°290°300°310°320°330°340°350°
0.50.20000.40.81.3233.84.966.46.77776.76.464.93.8321.20.70.40000.30.50.810.8