UK3FM
FM
On the map
Where 3FM is radiated from — 5 transmitters [V], Ofcom's published positions. This says nothing about how far the signal reaches; it is not a coverage map.
FM
| Transmitter | Nation | Frequency | ERP (H) | ERP (V) | Height | RDS name | PI code | Area |
|---|---|---|---|---|---|---|---|---|
| Douglas | Scotland | 105.0 MHz | 290 W | 1.8 kW | 38 m | __3FM___ | C482 | Isle of Man |
| Beary Peark | Scotland | 106.2 MHz | 64 W | 260 W | 30 m | __3FM__ | C482 | Isle of Man |
| Cronk ny Arrey | Northern Ireland | 104.2 MHz | — | 50 W | 8 m | 3FM_____ | C482 | Cronk ny Arrey |
| Ramsey Town C | Scotland | 104.2 MHz | — | 50 W | 10 m | __3FM__ | C482 | Ramsey |
| Snaefell | Scotland | 106.6 MHz | 1 W | 201 W | 20 m | __3FM___ | C482 | Isle of Man |
Radiation pattern
Douglas publishes the strongest FM signal for this station with a shape on record — where it is carried elsewhere too, this is not necessarily theirs.
Radiates most strongly toward the north (0°), as published by Ofcom.
More detail
Each ring is 10 dB of attenuation below the pattern's own peak; the outer rim is the peak itself and anything 30 dB down or deeper is drawn at the centre rather than off the edge of the chart, so a very deep null reads as “weak” and not as a hole in the picture. The shape says which direction radiates harder relative to the mast's own peak, not the absolute field strength there or how far it reaches — that is what the coverage map and the postcode lookup are for. Solid is horizontal polarisation, dashed is vertical.