Danbury - Ofcom TX Visualiser

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Danbury

Chelmsford · BBC National DAB · 12B / 225.648 MHz

Antenna pattern

Antenna pattern

ERP field: In-Use ERP Total = 2 kW

0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° N E S W 0°: 6.3 dB attenuation; relative ERP 23.4% of peak 10°: 8.1 dB attenuation; relative ERP 15.5% of peak 20°: 9.6 dB attenuation; relative ERP 11% of peak 30°: 10.9 dB attenuation; relative ERP 8.1% of peak 40°: 13.3 dB attenuation; relative ERP 4.7% of peak 50°: 16.9 dB attenuation; relative ERP 2% of peak 60°: 19.1 dB attenuation; relative ERP 1.2% of peak 70°: 22.2 dB attenuation; relative ERP 0.6% of peak 80°: 22.5 dB attenuation; relative ERP 0.6% of peak 90°: 22 dB attenuation; relative ERP 0.6% of peak 100°: 21.7 dB attenuation; relative ERP 0.7% of peak 110°: 19 dB attenuation; relative ERP 1.3% of peak 120°: 16.9 dB attenuation; relative ERP 2% of peak 130°: 14 dB attenuation; relative ERP 4% of peak 140°: 13.1 dB attenuation; relative ERP 4.9% of peak 150°: 12.4 dB attenuation; relative ERP 5.8% of peak 160°: 10 dB attenuation; relative ERP 10% of peak 170°: 6.7 dB attenuation; relative ERP 21.4% of peak 180°: 5.2 dB attenuation; relative ERP 30.2% of peak 190°: 3.9 dB attenuation; relative ERP 40.7% of peak 200°: 3.5 dB attenuation; relative ERP 44.7% of peak 210°: 2.6 dB attenuation; relative ERP 55% of peak 220°: 1.3 dB attenuation; relative ERP 74.1% of peak 230°: 0.5 dB attenuation; relative ERP 89.1% of peak 240°: 0.2 dB attenuation; relative ERP 95.5% of peak 250°: 0.2 dB attenuation; relative ERP 95.5% of peak 260°: 0 dB attenuation; relative ERP 100% of peak 270°: 0.6 dB attenuation; relative ERP 87.1% of peak 280°: 1.2 dB attenuation; relative ERP 75.9% of peak 290°: 1.2 dB attenuation; relative ERP 75.9% of peak 300°: 1.2 dB attenuation; relative ERP 75.9% of peak 310°: 1.7 dB attenuation; relative ERP 67.6% of peak 320°: 1.7 dB attenuation; relative ERP 67.6% of peak 330°: 2.6 dB attenuation; relative ERP 55% of peak 340°: 3.7 dB attenuation; relative ERP 42.7% of peak 350°: 4.7 dB attenuation; relative ERP 33.9% 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): 260° at 0 dB attenuation.

Deepest restriction(s): 80° at 22.5 dB attenuation.

Parameters

Date 04/03/2004
Ensemble BBC National DAB
Licence BBCD000001
Ensemble Area UK
EID CE15
Transmitter Area Chelmsford
Site Danbury
Freq. 225.648
Block 12B
TII Main Id (Hex) 06
TII Sub Id (Hex) 16
NGR TL78350546
Longitude/Latitude 000E34 50 51N43 10
Lat 51.719503
Long 0.580561
Site Height 105
In-Use Ae Ht 39
In-Use ERP Total 2 kW
Dir Max ERP 270°

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°
6.38.19.610.913.316.919.122.222.52221.71916.91413.112.4106.75.23.93.52.61.30.50.20.200.61.21.21.21.71.72.63.74.7