Arfon - Ofcom TX Visualiser

← Back to DAB search · Map this site name · Offline SVG map

Arfon

NW Wales · BBC National DAB · 12B / 225.648 MHz

Antenna pattern

Antenna pattern

ERP field: In-Use ERP Total = 3.909 kW

0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° N E S W 0°: 1.9 dB attenuation; relative ERP 64.6% of peak 10°: 2.4 dB attenuation; relative ERP 57.5% of peak 20°: 4.8 dB attenuation; relative ERP 33.1% of peak 30°: 6.9 dB attenuation; relative ERP 20.4% of peak 40°: 9.8 dB attenuation; relative ERP 10.5% of peak 50°: 15.5 dB attenuation; relative ERP 2.8% of peak 60°: 13.5 dB attenuation; relative ERP 4.5% of peak 70°: 14.2 dB attenuation; relative ERP 3.8% of peak 80°: 13.3 dB attenuation; relative ERP 4.7% of peak 90°: 12.8 dB attenuation; relative ERP 5.2% of peak 100°: 13.8 dB attenuation; relative ERP 4.2% of peak 110°: 19.7 dB attenuation; relative ERP 1.1% of peak 120°: 16.5 dB attenuation; relative ERP 2.2% of peak 130°: 21.8 dB attenuation; relative ERP 0.7% of peak 140°: 10.9 dB attenuation; relative ERP 8.1% of peak 150°: 3 dB attenuation; relative ERP 50.1% of peak 160°: 1.9 dB attenuation; relative ERP 64.6% of peak 170°: 1 dB attenuation; relative ERP 79.4% of peak 180°: 0 dB attenuation; relative ERP 100% of peak 190°: 1.1 dB attenuation; relative ERP 77.6% of peak 200°: 4.1 dB attenuation; relative ERP 38.9% of peak 210°: 2.9 dB attenuation; relative ERP 51.3% of peak 220°: 6.1 dB attenuation; relative ERP 24.5% of peak 230°: 12.3 dB attenuation; relative ERP 5.9% of peak 240°: 17.6 dB attenuation; relative ERP 1.7% of peak 250°: 14.7 dB attenuation; relative ERP 3.4% of peak 260°: 11.9 dB attenuation; relative ERP 6.5% of peak 270°: 22.6 dB attenuation; relative ERP 0.5% of peak 280°: 17.1 dB attenuation; relative ERP 1.9% of peak 290°: 13.5 dB attenuation; relative ERP 4.5% of peak 300°: 17.2 dB attenuation; relative ERP 1.9% of peak 310°: 5.3 dB attenuation; relative ERP 29.5% of peak 320°: 8.1 dB attenuation; relative ERP 15.5% of peak 330°: 8.2 dB attenuation; relative ERP 15.1% of peak 340°: 4.7 dB attenuation; relative ERP 33.9% of peak 350°: 1.9 dB attenuation; relative ERP 64.6% 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): 180° at 0 dB attenuation.

Deepest restriction(s): 270° at 22.6 dB attenuation.

Parameters

Date 04/09/2008
Ensemble BBC National DAB
Licence BBCD000001
mb21 Arfon
Ensemble Area UK
EID CE15
Transmitter Area NW Wales
Site Arfon
Freq. 225.648
Block 12B
TII Main Id (Hex) 05
TII Sub Id (Hex) 02
NGR SH47604937
Longitude/Latitude 004W16 25 53N01 12
Lat 53.019865
Long -4.273476
Site Height 300
In-Use Ae Ht 240
In-Use ERP Total 3.909 kW
Dir Max ERP

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°
1.92.44.86.99.815.513.514.213.312.813.819.716.521.810.931.9101.14.12.96.112.317.614.711.922.617.113.517.25.38.18.24.71.9