Ffestiniog - Ofcom TX Visualiser

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Ffestiniog

Snowdonia · BBC Radio 4 (FM) · 103.5 MHz

Antenna pattern

In-use horizontal pattern

ERP field: In-UseERP/HP = 100 W

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°: 1 dB attenuation; relative ERP 79.4% of peak 20°: 2 dB attenuation; relative ERP 63.1% of peak 30°: 4 dB attenuation; relative ERP 39.8% of peak 40°: 6.5 dB attenuation; relative ERP 22.4% of peak 50°: 9 dB attenuation; relative ERP 12.6% of peak 60°: 14 dB attenuation; relative ERP 4% of peak 70°: 20 dB attenuation; relative ERP 1% of peak 80°: 20 dB attenuation; relative ERP 1% of peak 90°: 20 dB attenuation; relative ERP 1% of peak 100°: 12 dB attenuation; relative ERP 6.3% of peak 110°: 9 dB attenuation; relative ERP 12.6% of peak 120°: 6.5 dB attenuation; relative ERP 22.4% of peak 130°: 4 dB attenuation; relative ERP 39.8% of peak 140°: 2 dB attenuation; relative ERP 63.1% of peak 150°: 1 dB attenuation; relative ERP 79.4% of peak 160°: 0.25 dB attenuation; relative ERP 94.4% of peak 170°: 0 dB attenuation; relative ERP 100% of peak 180°: 0.25 dB attenuation; relative ERP 94.4% of peak 190°: 1 dB attenuation; relative ERP 79.4% of peak 200°: 2 dB attenuation; relative ERP 63.1% of peak 210°: 4 dB attenuation; relative ERP 39.8% of peak 220°: 6 dB attenuation; relative ERP 25.1% of peak 230°: 9.5 dB attenuation; relative ERP 11.2% of peak 240°: 14 dB attenuation; relative ERP 4% of peak 250°: 20 dB attenuation; relative ERP 1% of peak 260°: 20 dB attenuation; relative ERP 1% of peak 270°: 19 dB attenuation; relative ERP 1.3% of peak 280°: 14 dB attenuation; relative ERP 4% of peak 290°: 9 dB attenuation; relative ERP 12.6% of peak 300°: 6.5 dB attenuation; relative ERP 22.4% of peak 310°: 4 dB attenuation; relative ERP 39.8% of peak 320°: 2 dB attenuation; relative ERP 63.1% of peak 330°: 1 dB attenuation; relative ERP 79.4% of peak 340°: 0.5 dB attenuation; relative ERP 89.1% of peak 350°: 0.25 dB attenuation; relative ERP 94.4% 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°, 170° at 0 dB attenuation.

Deepest restriction(s): 70°, 80°, 90°, 250°, 260° at 20 dB attenuation.

In-use vertical pattern

ERP field: In-Use ERP/VP = 82.1 W

0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° N E S W 0°: 0.1 dB attenuation; relative ERP 97.7% of peak 10°: 0.2 dB attenuation; relative ERP 95.5% of peak 20°: 0.6 dB attenuation; relative ERP 87.1% of peak 30°: 1.1 dB attenuation; relative ERP 77.6% of peak 40°: 1.6 dB attenuation; relative ERP 69.2% of peak 50°: 3.6 dB attenuation; relative ERP 43.7% of peak 60°: 7.6 dB attenuation; relative ERP 17.4% of peak 70°: 4.6 dB attenuation; relative ERP 34.7% of peak 80°: 3.1 dB attenuation; relative ERP 49% of peak 90°: 5.6 dB attenuation; relative ERP 27.5% of peak 100°: 8.1 dB attenuation; relative ERP 15.5% of peak 110°: 3.1 dB attenuation; relative ERP 49% of peak 120°: 1.6 dB attenuation; relative ERP 69.2% of peak 130°: 1.1 dB attenuation; relative ERP 77.6% of peak 140°: 0.6 dB attenuation; relative ERP 87.1% of peak 150°: 0.2 dB attenuation; relative ERP 95.5% 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°: 0.1 dB attenuation; relative ERP 97.7% of peak 200°: 0.6 dB attenuation; relative ERP 87.1% of peak 210°: 1.1 dB attenuation; relative ERP 77.6% of peak 220°: 1.8 dB attenuation; relative ERP 66.1% of peak 230°: 3.4 dB attenuation; relative ERP 45.7% of peak 240°: 6.6 dB attenuation; relative ERP 21.9% of peak 250°: 7.6 dB attenuation; relative ERP 17.4% of peak 260°: 3.1 dB attenuation; relative ERP 49% of peak 270°: 4.8 dB attenuation; relative ERP 33.1% of peak 280°: 7.6 dB attenuation; relative ERP 17.4% of peak 290°: 3.3 dB attenuation; relative ERP 46.8% of peak 300°: 1.6 dB attenuation; relative ERP 69.2% of peak 310°: 1.1 dB attenuation; relative ERP 77.6% of peak 320°: 0.6 dB attenuation; relative ERP 87.1% of peak 330°: 0.1 dB attenuation; relative ERP 97.7% 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): 160°, 170°, 180°, 340°, 350° at 0 dB attenuation.

Deepest restriction(s): 100° at 8.1 dB attenuation.

Licensed horizontal pattern

ERP field: Licensed ERP/HP = 100 W

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°: 0 dB attenuation; relative ERP 100% of peak 80°: 0 dB attenuation; relative ERP 100% of peak 90°: 0 dB attenuation; relative ERP 100% of peak 100°: 0 dB attenuation; relative ERP 100% of peak 110°: 0 dB attenuation; relative ERP 100% 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°: 0 dB attenuation; relative ERP 100% of peak 250°: 0 dB attenuation; relative ERP 100% 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°: 0 dB attenuation; relative ERP 100% of peak 300°: 0 dB attenuation; relative ERP 100% 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°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 180°, 190°, 200°, 210°, 220°, 230°, 240°, 250°, 290°, 300°, 310°, 320°, 330°, 340°, 350° at 0 dB attenuation.

Deepest restriction(s): 260°, 270°, 280° at 3 dB attenuation.

Licensed vertical pattern

ERP field: Licensed ERP/VP = 100 W

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°: 0 dB attenuation; relative ERP 100% of peak 80°: 0 dB attenuation; relative ERP 100% of peak 90°: 0 dB attenuation; relative ERP 100% of peak 100°: 0 dB attenuation; relative ERP 100% of peak 110°: 0 dB attenuation; relative ERP 100% 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°: 0 dB attenuation; relative ERP 100% of peak 250°: 0 dB attenuation; relative ERP 100% 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°: 0 dB attenuation; relative ERP 100% of peak 300°: 0 dB attenuation; relative ERP 100% 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°, 70°, 80°, 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, 170°, 180°, 190°, 200°, 210°, 220°, 230°, 240°, 250°, 290°, 300°, 310°, 320°, 330°, 340°, 350° at 0 dB attenuation.

Deepest restriction(s): 260°, 270°, 280° at 3 dB attenuation.

Parameters

Date 01/01/1900
Station BBC Radio 4 (FM)
Area Snowdonia
Site Ffestiniog
Licence BBC000004
mb21 Ffestiniog
Frequency 103.5
NGR SH70933915
RDS PS _BBC_R4_
RDS PI C204
Switched PI
TP/TA
TMC
Lat 52.934187
Long -3.921819
Site Ht 308
In-Use Aerial Ht 37
In-UseERP/HP 100 W
In-Use ERP/VP 82.1 W
Max Dir
Licensed ERP/HP 100 W
Licensed ERP/VP 100 W

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°
01246.59142020201296.54210.2500.2512469.5142020191496.54210.50.25

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°
0.10.20.61.11.63.67.64.63.15.68.13.11.61.10.60.20000.10.61.11.83.46.67.63.14.87.63.31.61.10.60.100

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°
000000000000000000000000003330000000

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°
000000000000000000000000003330000000