Douglas - Ofcom TX Visualiser

← Back to FM/VHF search · Map this site name · Offline SVG map

Douglas

Isle of Man · 3FM · 105 MHz

Antenna pattern

In-use horizontal pattern

ERP field: In-UseERP/HP = 290 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°: 1.5 dB attenuation; relative ERP 70.8% of peak 30°: 1.5 dB attenuation; relative ERP 70.8% of peak 40°: 1 dB attenuation; relative ERP 79.4% of peak 50°: 1 dB attenuation; relative ERP 79.4% of peak 60°: 1.5 dB attenuation; relative ERP 70.8% of peak 70°: 2.5 dB attenuation; relative ERP 56.2% of peak 80°: 4 dB attenuation; relative ERP 39.8% of peak 90°: 5.5 dB attenuation; relative ERP 28.2% of peak 100°: 6.5 dB attenuation; relative ERP 22.4% of peak 110°: 7 dB attenuation; relative ERP 20% of peak 120°: 6.5 dB attenuation; relative ERP 22.4% of peak 130°: 5 dB attenuation; relative ERP 31.6% of peak 140°: 4 dB attenuation; relative ERP 39.8% of peak 150°: 3 dB attenuation; relative ERP 50.1% of peak 160°: 2 dB attenuation; relative ERP 63.1% of peak 170°: 1.5 dB attenuation; relative ERP 70.8% of peak 180°: 2.5 dB attenuation; relative ERP 56.2% of peak 190°: 4 dB attenuation; relative ERP 39.8% of peak 200°: 7 dB attenuation; relative ERP 20% of peak 210°: 9 dB attenuation; relative ERP 12.6% of peak 220°: 6 dB attenuation; relative ERP 25.1% of peak 230°: 4 dB attenuation; relative ERP 39.8% of peak 240°: 2.5 dB attenuation; relative ERP 56.2% of peak 250°: 2 dB attenuation; relative ERP 63.1% of peak 260°: 2.5 dB attenuation; relative ERP 56.2% of peak 270°: 3.5 dB attenuation; relative ERP 44.7% of peak 280°: 4.5 dB attenuation; relative ERP 35.5% of peak 290°: 5 dB attenuation; relative ERP 31.6% of peak 300°: 5 dB attenuation; relative ERP 31.6% of peak 310°: 4 dB attenuation; relative ERP 39.8% of peak 320°: 2.5 dB attenuation; relative ERP 56.2% of peak 330°: 1.5 dB attenuation; relative ERP 70.8% of peak 340°: 0.5 dB attenuation; relative ERP 89.1% 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°, 350° at 0 dB attenuation.

Deepest restriction(s): 210° at 9 dB attenuation.

In-use vertical pattern

ERP field: In-Use ERP/VP = 1.8 kW

0° 30° 60° 90° 120° 150° 180° 210° 240° 270° 300° 330° N E S W 0°: 1 dB attenuation; relative ERP 79.4% of peak 10°: 0.5 dB attenuation; relative ERP 89.1% of peak 20°: 0.5 dB attenuation; relative ERP 89.1% of peak 30°: 1 dB attenuation; relative ERP 79.4% of peak 40°: 2 dB attenuation; relative ERP 63.1% of peak 50°: 3.5 dB attenuation; relative ERP 44.7% of peak 60°: 6 dB attenuation; relative ERP 25.1% of peak 70°: 9 dB attenuation; relative ERP 12.6% of peak 80°: 12 dB attenuation; relative ERP 6.3% of peak 90°: 13.5 dB attenuation; relative ERP 4.5% of peak 100°: 13.5 dB attenuation; relative ERP 4.5% of peak 110°: 12.5 dB attenuation; relative ERP 5.6% of peak 120°: 13 dB attenuation; relative ERP 5% of peak 130°: 13 dB attenuation; relative ERP 5% of peak 140°: 12 dB attenuation; relative ERP 6.3% of peak 150°: 9.5 dB attenuation; relative ERP 11.2% of peak 160°: 7 dB attenuation; relative ERP 20% of peak 170°: 4.5 dB attenuation; relative ERP 35.5% of peak 180°: 2.5 dB attenuation; relative ERP 56.2% of peak 190°: 1 dB attenuation; relative ERP 79.4% 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°: 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°: 4.5 dB attenuation; relative ERP 35.5% of peak 270°: 5 dB attenuation; relative ERP 31.6% of peak 280°: 5 dB attenuation; relative ERP 31.6% of peak 290°: 5 dB attenuation; relative ERP 31.6% of peak 300°: 5 dB attenuation; relative ERP 31.6% of peak 310°: 4.5 dB attenuation; relative ERP 35.5% of peak 320°: 4 dB attenuation; relative ERP 39.8% of peak 330°: 3 dB attenuation; relative ERP 50.1% of peak 340°: 2.5 dB attenuation; relative ERP 56.2% of peak 350°: 1.5 dB attenuation; relative ERP 70.8% 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): 200°, 210°, 220° at 0 dB attenuation.

Deepest restriction(s): 90°, 100° at 13.5 dB attenuation.

Licensed horizontal pattern

ERP field: Licensed ERP/HP = 1.6 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°: 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°: 4 dB attenuation; relative ERP 39.8% of peak 250°: 4 dB attenuation; relative ERP 39.8% of peak 260°: 4 dB attenuation; relative ERP 39.8% of peak 270°: 4 dB attenuation; relative ERP 39.8% of peak 280°: 4 dB attenuation; relative ERP 39.8% of peak 290°: 4 dB attenuation; relative ERP 39.8% 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°, 300°, 310°, 320°, 330°, 340°, 350° at 0 dB attenuation.

Deepest restriction(s): 240°, 250°, 260°, 270°, 280°, 290° at 4 dB attenuation.

Licensed vertical pattern

ERP field: Licensed ERP/VP = 1.6 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°: 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°: 4 dB attenuation; relative ERP 39.8% of peak 250°: 4 dB attenuation; relative ERP 39.8% of peak 260°: 4 dB attenuation; relative ERP 39.8% of peak 270°: 4 dB attenuation; relative ERP 39.8% of peak 280°: 4 dB attenuation; relative ERP 39.8% of peak 290°: 4 dB attenuation; relative ERP 39.8% 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°, 300°, 310°, 320°, 330°, 340°, 350° at 0 dB attenuation.

Deepest restriction(s): 240°, 250°, 260°, 270°, 280°, 290° at 4 dB attenuation.

Parameters

Date 01/01/1900
Station 3FM
Area Isle of Man
Site Douglas
Licence IOM100712
Frequency 105
NGR SC37247451
RDS PS __3FM___
RDS PI C482
Switched PI
TP/TA
TMC
Lat 54.14057
Long -4.493077
Site Ht 143
In-Use Aerial Ht 38
In-UseERP/HP 290 W
In-Use ERP/VP 1.8 kW
Max Dir 290
Licensed ERP/HP 1.6 kW
Licensed ERP/VP 1.6 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°
011.51.5111.52.545.56.576.554321.52.5479642.522.53.54.55542.51.50.50

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°
10.50.5123.5691213.513.512.51313129.574.52.510001234.555554.5432.51.5

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°
000000000000000000000000444444000000

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°
000000000000000000000000444444000000