BBC Radio nan Gaidheal

On the map

Where BBC Radio nan Gaidheal is radiated from — 31 transmitters [V], Ofcom's published positions. This says nothing about how far the signal reaches; it is not a coverage map.

FM

31 FM transmitters, strongest first. ERP is published per polarisation; a dash means nothing is radiated in that plane.
Transmitter	Nation	Frequency	ERP (H)	ERP (V)	Height	RDS name	PI code	Area
Meldrum	Scotland	104.2 MHz	75.0 kW	75.0 kW	117 m	BBC_Gael	C316	Aberdeenshire
Melvaig	Scotland	103.9 MHz	18.0 kW	17.6 kW	35 m	BBC_Gael	C316	Wester Ross
Skriaig	Scotland	104.7 MHz	14.7 kW	9.7 kW	46 m	BBC_Gael	C316	Skye & Lochalsh
Rosemarkie	Scotland	104.9 MHz	9.8 kW	9.8 kW	92 m	BBC_Gael	C316	Highland
Rumster Forest	Scotland	104.6 MHz	5.0 kW	5.0 kW	209 m	BBC_Gael	C316	Caithness
Black Hill	Scotland	104.7 MHz	4.9 kW	4.9 kW	200 m	BBC_Gael	C316	Central Scotland
Craigkelly	Scotland	104.1 MHz	2.5 kW	2.5 kW	119 m	BBC_Gael	C316	A
Forfar	Scotland	103.7 MHz	2.5 kW	2.5 kW	136 m	BBC_Gael	C316	Angus
Glengorm	Scotland	103.5 MHz	2.5 kW	2.5 kW	30 m	BBC_Gael	C316	Isle of Mull
Oban	Scotland	104.6 MHz	2.5 kW	2.5 kW	43 m	BBC_Gael	C316	Oban and Mull
Clettraval	Scotland	103.7 MHz	—	2.0 kW	40 m	BBC_Gael	C316	North Uist
Eitshal	Scotland	104.3 MHz	—	2.0 kW	147 m	BBC_Gael	C316	Isle of Lewis
Fort William	Scotland	104.2 MHz	2.0 kW	2.0 kW	36 m	BBC_Gael	C316	Fort William
South Knapdale	Scotland	103.7 MHz	1.1 kW	1.1 kW	40 m	BBC_Gael	C316	Kintyre Islay and Jura
Daliburgh	Scotland	104.2 MHz	—	1.0 kW	35 m	BBC_Gael	C316	South Uist
Fort Augustus	Scotland	104.7 MHz	—	1.0 kW	40 m	BBC_Gael	C316	Great Glen
Kirkton Mailer	Scotland	104.5 MHz	500 W	500 W	42 m	BBC_Gael	C316	Perth
Grantown	Scotland	104.7 MHz	360 W	360 W	27 m	BBC_Gael	C316	Cairngorms
Rothesay	Scotland	104.0 MHz	285 W	285 W	34 m	BBC_Gael	C316	Bute
Ness	Scotland	104.9 MHz	—	162 W	35 m	BBC_Gael	C316	Isle of Lewis
Penicuik	Scotland	104.4 MHz	—	132 W	35 m	BBC_Gael	C316	Penicuik
Port Ellen	Scotland	104.9 MHz	—	65 W	23 m	BBC_Gael	C316	Islay
Bowmore	Scotland	103.6 MHz	—	61 W	40 m	BBC_Gael	C316	Islay
Ardgour	Scotland	104.9 MHz	50 W	5 W	30 m	BBC_Gael	C316	Argyll & Bute
Kingussie	Scotland	104.0 MHz	50 W	50 W	9 m	BBC_Gael	C316	Cairngorms
Ullapool	Scotland	104.9 MHz	—	50 W	27 m	BBC_Gael	C316	Ullapool
Mallaig	Scotland	104.3 MHz	20 W	20 W	16 m	BBC_Gael	C316	Mallaig
Ballachulish	Scotland	103.7 MHz	15 W	15 W	38 m	BBC_Gael	C316	Argyll & Bute
Strachur	Scotland	104.2 MHz	10 W	10 W	19 m	BBC_Gael	C316	Inveraray
Kinlochleven	Scotland	104.4 MHz	5 W	5 W	15 m	BBC_Gael	C316	Kinlochleven
Penifiler	Scotland	104.3 MHz	5 W	5 W	25 m	BBC_Gael	C316	Portree

Radiation pattern

Meldrum 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-east (50°), 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.