UKLes Platons
England · FM and DAB
- Position
- 49.246024, -2.101200
- Grid reference
- CI92732727
- Nation
- England
- Ground height
- 134 m
- Antenna height
- —
On the map
Les Platons is shown in place. The coverage model has not been run, or predicts nothing from it.
The lines are how far the signal is modelled to get: solid while the margin still clears 10 dB, dashed out to where it last clears 0 dB. The real edge sits inside them — every point inherits the model's measured optimism of about 17 dB.
How the rings were drawn
It is an envelope, not a boundary: terrain can still block reception well inside it, and it is an edge, not a fill — the colour says how far the signal gets, not that every spot under it works. The traced outline is smoothed across 12 degrees of bearing, so no single ray can spike or notch it; the ground it encloses moves by well under a percent [V]. Zoom in and the shading gives way to the per-area prediction, which is the same question answered Output Area by Output Area. The FM radio and DAB radio rings were shaped by Ofcom's published radiation pattern [D].
The modelled outer edge drawn above: FM radio about 87 km toward the east but only 39 km toward the south-west; DAB radio about 63 km toward the south but only 34 km toward the north-east [I].
Open this transmitter on the full mapreach, the aerial direction, and everything else within range
FM radio
| Station | Frequency | ERP (H) | ERP (V) | Height | RDS name | PI code | Pattern |
|---|---|---|---|---|---|---|---|
| BBC Radio Jersey (FM) | 88.8 MHz | 1.9 kW | 1.9 kW | 35 m | BBC_Jrsy | C417 | HV |
| BBC Radio 2 | 89.6 MHz | 8.0 kW | 8.0 kW | 45 m | _BBC_R2_ | C202 | HV |
| BBC Radio 3 | 91.1 MHz | 8.0 kW | 8.0 kW | 45 m | _BBC_R3_ | C203 | HV |
| BBC Radio 4 (FM) | 94.8 MHz | 8.0 kW | 8.0 kW | 45 m | _BBC_R4_ | C204 | HV |
| BBC Radio 1 | 97.1 MHz | 8.0 kW | 8.0 kW | 45 m | Radio_1_ | C201 | HV |
BBC Radio Jersey (FM) — radiation pattern
Radiates most strongly toward the south-east (140°), 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.
BBC Radio 2 — radiation pattern
Radiates most strongly toward the north-west (330°), 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.
BBC Radio 3 — radiation pattern
Radiates most strongly toward the north-west (330°), 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.
BBC Radio 4 (FM) — radiation pattern
Radiates most strongly toward the north-west (330°), 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.
BBC Radio 1 — radiation pattern
Radiates most strongly toward the north-west (330°), 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.
DAB radio
| Ensemble | Block | Frequency | ERP | Height | Area | EId | Services |
|---|---|---|---|---|---|---|---|
| Channel Islands | 12A | 223.936 MHz | 2.0 kW | 55 m | Jersey | C1CF | 24 |
| BBC National DAB | 12B | 225.648 MHz | 2.0 kW | 55 m | Les Platons | CE15 | 16 |
Channel Islands — block 12A
BBC National DAB — block 12B
Channel Islands — radiation pattern
Radiates most strongly toward the south (190°), 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.
BBC National DAB — radiation pattern
Radiates most strongly toward the south (190°), 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.
Other transmitters nearby
Every structure Ofcom list within 40 km, nearest first. Close is not the same as an alternative: most of these are single-service relays, and one of them may radiate a thousandth of this mast's power in a direction that misses you.