Alderney

England · TV and FM

Position: 49.717715, -2.187295
Grid reference: XD86507980
Nation: England
Ground height: 66 m
Antenna height: 31 m
Aerial group: Group B — C35–53, the middle
Polarisation: Vertical
BBC region: South West/Channel
ITV region: Channel
ITV news region: Channel
Parent transmitter: Fremont Point
Ofcom site number: 12803

The position is our conversion of Ofcom's grid reference XD86507980 from OSGB36 to WGS84 [V] — Ofcom publish none for television sites, and the transform reproduces their own radio coordinates to within 0.1 m on all 3,403 records that carry both.

On the map

Alderney is shown in place. The coverage model has not been run, or predicts nothing from it.

The model predicts too few served areas from this mast to trace a coverage edge, so no rings are drawn.

Open this transmitter on the full mapreach, the aerial direction, and everything else within range

Television

Multiplexes transmitted from this site, as published by Ofcom.
Mux	Freeview name	Channel	Frequency	ERP	System	Operator
PSB1	BBC A	C44	658 MHz	500 W	DVB-T	BBC
PSB2	D3&4	C41	634 MHz	500 W	DVB-T	Digital 3&4 (ITV/Channel 4)
PSB3	BBC B	C47	682 MHz	500 W	DVB-T2	BBC

FM radio

FM services. ERP is published separately per polarisation; a dash means nothing is radiated in that plane.
Station	Frequency	ERP (H)	ERP (V)	Height	RDS name	PI code	Pattern
BBC Guernsey (FM)	99.0 MHz	—	25 W	21 m	BBC_Gnsy	C517	V

BBC Guernsey (FM) — radiation pattern

Radiates most strongly toward the west (290°), 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

Fort Albert0.9 km NNE · FMFORT ALBERT1.0 km N · DABMount Durand St Peter Port39.1 km SW · TV

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.

Ofcom's notes

SFN with Fremont Point.