Llangollen VHF - Ofcom TX Visualiser

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Llangollen VHF

Llangollen and Cheshire · BBC Radio 4 (FM) · 93.3 MHz

Antenna pattern

In-use horizontal pattern

ERP field: In-UseERP/HP = 7.8 kW

0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° N E S W 0°: 0 dB attenuation; relative ERP 100% of peak 10°: 0 dB attenuation; relative ERP 100% of peak 20°: 1 dB attenuation; relative ERP 79.4% of peak 30°: 1 dB attenuation; relative ERP 79.4% of peak 40°: 1 dB attenuation; relative ERP 79.4% of peak 50°: 1 dB attenuation; relative ERP 79.4% of peak 60°: 2 dB attenuation; relative ERP 63.1% of peak 70°: 3 dB attenuation; relative ERP 50.1% of peak 80°: 3 dB attenuation; relative ERP 50.1% of peak 90°: 3 dB attenuation; relative ERP 50.1% of peak 100°: 3 dB attenuation; relative ERP 50.1% of peak 110°: 3 dB attenuation; relative ERP 50.1% of peak 120°: 2 dB attenuation; relative ERP 63.1% of peak 130°: 1 dB attenuation; relative ERP 79.4% of peak 140°: 1 dB attenuation; relative ERP 79.4% of peak 150°: 1 dB attenuation; relative ERP 79.4% of peak 160°: 1 dB attenuation; relative ERP 79.4% of peak 170°: 0 dB attenuation; relative ERP 100% of peak 180°: 0 dB attenuation; relative ERP 100% of peak 190°: 0 dB attenuation; relative ERP 100% of peak 200°: 1 dB attenuation; relative ERP 79.4% of peak 210°: 1 dB attenuation; relative ERP 79.4% of peak 220°: 1 dB attenuation; relative ERP 79.4% of peak 230°: 1 dB attenuation; relative ERP 79.4% of peak 240°: 2 dB attenuation; relative ERP 63.1% of peak 250°: 3 dB attenuation; relative ERP 50.1% of peak 260°: 3 dB attenuation; relative ERP 50.1% of peak 270°: 3 dB attenuation; relative ERP 50.1% of peak 280°: 3 dB attenuation; relative ERP 50.1% of peak 290°: 3 dB attenuation; relative ERP 50.1% of peak 300°: 2 dB attenuation; relative ERP 63.1% of peak 310°: 1 dB attenuation; relative ERP 79.4% of peak 320°: 1 dB attenuation; relative ERP 79.4% of peak 330°: 1 dB attenuation; relative ERP 79.4% of peak 340°: 1 dB attenuation; relative ERP 79.4% of peak 350°: 0 dB attenuation; relative ERP 100% 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): 0°, 10°, 170°, 180°, 190°, 350° at 0 dB attenuation.

Deepest restriction(s): 70°, 80°, 90°, 100°, 110°, 250°, 260°, 270°, 280°, 290° at 3 dB attenuation.

In-use vertical pattern

ERP field: In-Use ERP/VP = 7.8 kW

0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° N E S W 0°: 0 dB attenuation; relative ERP 100% of peak 10°: 0 dB attenuation; relative ERP 100% of peak 20°: 1 dB attenuation; relative ERP 79.4% of peak 30°: 1 dB attenuation; relative ERP 79.4% of peak 40°: 1 dB attenuation; relative ERP 79.4% of peak 50°: 1 dB attenuation; relative ERP 79.4% of peak 60°: 2 dB attenuation; relative ERP 63.1% of peak 70°: 3 dB attenuation; relative ERP 50.1% of peak 80°: 3 dB attenuation; relative ERP 50.1% of peak 90°: 3 dB attenuation; relative ERP 50.1% of peak 100°: 3 dB attenuation; relative ERP 50.1% of peak 110°: 3 dB attenuation; relative ERP 50.1% of peak 120°: 2 dB attenuation; relative ERP 63.1% of peak 130°: 1 dB attenuation; relative ERP 79.4% of peak 140°: 1 dB attenuation; relative ERP 79.4% of peak 150°: 1 dB attenuation; relative ERP 79.4% of peak 160°: 1 dB attenuation; relative ERP 79.4% of peak 170°: 0 dB attenuation; relative ERP 100% of peak 180°: 0 dB attenuation; relative ERP 100% of peak 190°: 0 dB attenuation; relative ERP 100% of peak 200°: 1 dB attenuation; relative ERP 79.4% of peak 210°: 1 dB attenuation; relative ERP 79.4% of peak 220°: 1 dB attenuation; relative ERP 79.4% of peak 230°: 1 dB attenuation; relative ERP 79.4% of peak 240°: 2 dB attenuation; relative ERP 63.1% of peak 250°: 3 dB attenuation; relative ERP 50.1% of peak 260°: 3 dB attenuation; relative ERP 50.1% of peak 270°: 3 dB attenuation; relative ERP 50.1% of peak 280°: 3 dB attenuation; relative ERP 50.1% of peak 290°: 3 dB attenuation; relative ERP 50.1% of peak 300°: 2 dB attenuation; relative ERP 63.1% of peak 310°: 1 dB attenuation; relative ERP 79.4% of peak 320°: 1 dB attenuation; relative ERP 79.4% of peak 330°: 1 dB attenuation; relative ERP 79.4% of peak 340°: 1 dB attenuation; relative ERP 79.4% of peak 350°: 0 dB attenuation; relative ERP 100% 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): 0°, 10°, 170°, 180°, 190°, 350° at 0 dB attenuation.

Deepest restriction(s): 70°, 80°, 90°, 100°, 110°, 250°, 260°, 270°, 280°, 290° at 3 dB attenuation.

Licensed horizontal pattern

ERP field: Licensed ERP/HP = 25.1 kW

0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° N E S W 0°: 0 dB attenuation; relative ERP 100% of peak 10°: 0 dB attenuation; relative ERP 100% 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 dB attenuation; relative ERP 100% of peak 60°: 0 dB attenuation; relative ERP 100% of peak 70°: 7 dB attenuation; relative ERP 20% of peak 80°: 7 dB attenuation; relative ERP 20% of peak 90°: 7 dB attenuation; relative ERP 20% of peak 100°: 7 dB attenuation; relative ERP 20% of peak 110°: 7 dB attenuation; relative ERP 20% of peak 120°: 0 dB attenuation; relative ERP 100% of peak 130°: 0 dB attenuation; relative ERP 100% of peak 140°: 0 dB attenuation; relative ERP 100% of peak 150°: 0 dB attenuation; relative ERP 100% of peak 160°: 0 dB attenuation; relative ERP 100% of peak 170°: 0 dB attenuation; relative ERP 100% of peak 180°: 0 dB attenuation; relative ERP 100% of peak 190°: 0 dB attenuation; relative ERP 100% of peak 200°: 0 dB attenuation; relative ERP 100% of peak 210°: 0 dB attenuation; relative ERP 100% of peak 220°: 0 dB attenuation; relative ERP 100% of peak 230°: 0 dB attenuation; relative ERP 100% of peak 240°: 3 dB attenuation; relative ERP 50.1% of peak 250°: 7 dB attenuation; relative ERP 20% of peak 260°: 7 dB attenuation; relative ERP 20% of peak 270°: 7 dB attenuation; relative ERP 20% of peak 280°: 7 dB attenuation; relative ERP 20% of peak 290°: 7 dB attenuation; relative ERP 20% of peak 300°: 3 dB attenuation; relative ERP 50.1% of peak 310°: 0 dB attenuation; relative ERP 100% of peak 320°: 0 dB attenuation; relative ERP 100% of peak 330°: 0 dB attenuation; relative ERP 100% of peak 340°: 0 dB attenuation; relative ERP 100% of peak 350°: 0 dB attenuation; relative ERP 100% 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): 0°, 10°, 20°, 30°, 40°, 50°, 60°, 120°, 130°, 140°, 150°, 160°, 170°, 180°, 190°, 200°, 210°, 220°, 230°, 310°, 320°, 330°, 340°, 350° at 0 dB attenuation.

Deepest restriction(s): 70°, 80°, 90°, 100°, 110°, 250°, 260°, 270°, 280°, 290° at 7 dB attenuation.

Licensed vertical pattern

ERP field: Licensed ERP/VP = 25.1 kW

0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° N E S W 0°: 0 dB attenuation; relative ERP 100% of peak 10°: 0 dB attenuation; relative ERP 100% 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 dB attenuation; relative ERP 100% of peak 60°: 0 dB attenuation; relative ERP 100% of peak 70°: 7 dB attenuation; relative ERP 20% of peak 80°: 7 dB attenuation; relative ERP 20% of peak 90°: 7 dB attenuation; relative ERP 20% of peak 100°: 7 dB attenuation; relative ERP 20% of peak 110°: 7 dB attenuation; relative ERP 20% of peak 120°: 0 dB attenuation; relative ERP 100% of peak 130°: 0 dB attenuation; relative ERP 100% of peak 140°: 0 dB attenuation; relative ERP 100% of peak 150°: 0 dB attenuation; relative ERP 100% of peak 160°: 0 dB attenuation; relative ERP 100% of peak 170°: 0 dB attenuation; relative ERP 100% of peak 180°: 0 dB attenuation; relative ERP 100% of peak 190°: 0 dB attenuation; relative ERP 100% of peak 200°: 0 dB attenuation; relative ERP 100% of peak 210°: 0 dB attenuation; relative ERP 100% of peak 220°: 0 dB attenuation; relative ERP 100% of peak 230°: 0 dB attenuation; relative ERP 100% of peak 240°: 3 dB attenuation; relative ERP 50.1% of peak 250°: 7 dB attenuation; relative ERP 20% of peak 260°: 7 dB attenuation; relative ERP 20% of peak 270°: 7 dB attenuation; relative ERP 20% of peak 280°: 7 dB attenuation; relative ERP 20% of peak 290°: 7 dB attenuation; relative ERP 20% of peak 300°: 3 dB attenuation; relative ERP 50.1% of peak 310°: 0 dB attenuation; relative ERP 100% of peak 320°: 0 dB attenuation; relative ERP 100% of peak 330°: 0 dB attenuation; relative ERP 100% of peak 340°: 0 dB attenuation; relative ERP 100% of peak 350°: 0 dB attenuation; relative ERP 100% 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): 0°, 10°, 20°, 30°, 40°, 50°, 60°, 120°, 130°, 140°, 150°, 160°, 170°, 180°, 190°, 200°, 210°, 220°, 230°, 310°, 320°, 330°, 340°, 350° at 0 dB attenuation.

Deepest restriction(s): 70°, 80°, 90°, 100°, 110°, 250°, 260°, 270°, 280°, 290° at 7 dB attenuation.

Parameters

Date 01/01/1900
Station BBC Radio 4 (FM)
Area Llangollen and Cheshire
Site Llangollen VHF
Licence BBC000004
mb21 Llangollen VHF
Frequency 93.3
NGR SJ20914885
RDS PS _BBC_R4_
RDS PI C204
Switched PI
TP/TA
TMC
Lat 53.031063
Long -3.180791
Site Ht 556
In-Use Aerial Ht 53
In-UseERP/HP 7.8 kW
In-Use ERP/VP 7.8 kW
Max Dir
Licensed ERP/HP 25.1 kW
Licensed ERP/VP 25.1 kW

Pattern values

In-use horizontal 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°
001111233333211110001111233333211110

In-use vertical 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°
001111233333211110001111233333211110

Licensed horizontal 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°
000000077777000000000000377777300000

Licensed vertical 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°
000000077777000000000000377777300000