SDL National

DAB ensemble · block 11A · 75 transmitters

Ensemble identifier: C1CE
Block: 11A
Frequency: 216.928 MHz
Licence: DM100849
Area: UK
Services: 31 radio

On the map

Where SDL National is radiated from — 75 transmitters [V], Ofcom's published positions. This says nothing about how far the signal reaches; it is not a coverage map.

What it carries

Transmitters

75 transmitters, strongest first. TII is the transmitter identifier a receiver can report, which is how you tell which one you are actually hearing in a single-frequency network.
Transmitter	Nation	Block	Frequency	ERP	Height	Area	TII
Wrotham	England	11A	216.928 MHz	25.0 kW	150 m	North West Kent	01/07
Sutton Coldfield	England	11A	216.928 MHz	20.0 kW	200 m	W. Midlands	13/12
Winter Hill	England	11A	216.928 MHz	20.0 kW	207 m	Lancs	2B/11
Pontop Pike	England	11A	216.928 MHz	19.1 kW	123 m	Tyne and Wear	34/01
Angus	Scotland	11A	216.928 MHz	10.0 kW	211 m	Tayside	3C/08
Moel y Parc	Wales	11A	216.928 MHz	10.0 kW	188 m	N. Wales and Cheshire	29/03
Divis	Northern Ireland	11A	216.928 MHz	9.5 kW	115 m	Northern Ireland	19/01
Oxford	England	11A	216.928 MHz	9.5 kW	131 m	Oxford	12/0E
Waltham	England	11A	216.928 MHz	9.5 kW	235 m	E. Midlands	41/10
Black Hill	Scotland	11A	216.928 MHz	9.5 kW	263 m	West Lothian	3F/04
Wenvoe	Wales	11A	216.928 MHz	8.8 kW	200 m	South Wales	24/01
Peterborough	England	11A	216.928 MHz	8.7 kW	133 m	Cambridgeshire	1E/01
Turners Hill A	England	11A	216.928 MHz	8.1 kW	65 m	West Midlands	13/0F
Sandy Heath	England	11A	216.928 MHz	7.6 kW	166 m	Beds	16/03
Emley Moor	England	11A	216.928 MHz	7.4 kW	285 m	W. Yorks	2E/14
Darvel	Scotland	11A	216.928 MHz	6.7 kW	138 m	Ayr	40/0A
Crystal Palace	England	11A	216.928 MHz	5.7 kW	172 m	London	0B/01
Alsagers Bank	England	11A	216.928 MHz	5.0 kW	49 m	North Staffs	35/02
Beacon Hill North	England	11A	216.928 MHz	5.0 kW	68 m	Torbay	0E/07
Bilsdale	England	11A	216.928 MHz	5.0 kW	247 m	Teesside	3B/02
Chillerton Down	England	11A	216.928 MHz	5.0 kW	214 m	Hampshire	02/11
Craigkelly	Scotland	11A	216.928 MHz	5.0 kW	119 m	Edinburgh	3F/02
Kilvey Hill	Wales	11A	216.928 MHz	5.0 kW	45 m	Swansea	27/03
Guildford	England	11A	216.928 MHz	4.9 kW	39 m	S.W. London and Surrey	0C/16
Mendip	England	11A	216.928 MHz	4.9 kW	238 m	Somerset and Avon	23/02
Daventry	England	11A	216.928 MHz	4.8 kW	106 m	Noth Northamptonshire	17/02
Hannington	England	11A	216.928 MHz	4.6 kW	83 m	N. Hants and Wilts	03/0C
Belmont	England	11A	216.928 MHz	4.2 kW	291 m	Lincolnshire	32/02
Churchdown Hill	England	11A	216.928 MHz	4.0 kW	20 m	Gloucester and Cheltenham	1B/11
The Wrekin	England	11A	216.928 MHz	3.9 kW	45 m	Telford	37/09
High Hunsley	England	11A	216.928 MHz	3.8 kW	70 m	Humberside	2F/07
Danbury	England	11A	216.928 MHz	3.5 kW	39 m	Chelmsford	06/16
Zouches Farm	England	11A	216.928 MHz	3.3 kW	62 m	Beds	16/0E
Hemel Hempstead	England	11A	216.928 MHz	3.1 kW	69 m	North London	16/12
Sheffield	England	11A	216.928 MHz	2.8 kW	39 m	S. Yorks	2D/03
Bow Brickhill	England	11A	216.928 MHz	2.7 kW	55 m	Beds	16/09
Caradon Hill	England	11A	216.928 MHz	2.5 kW	153 m	East Cornwall	04/05
Blunsdon DAB	England	11A	216.928 MHz	2.5 kW	37 m	Swindon	1A/0B
Plympton	England	11A	216.928 MHz	2.4 kW	38 m	Plymouth	22/04
Truleigh Hill	England	11A	216.928 MHz	2.4 kW	45 m	Truleigh Hill - West Sussex	0A/04
Mendlesham	England	11A	216.928 MHz	2.3 kW	220 m	Suffolk	31/0E
Pur Down	England	11A	216.928 MHz	2.0 kW	55 m	Bristol	23/0F
Ridge Hill	England	11A	216.928 MHz	2.0 kW	127 m	Herefordshire	1C/01
Bluebell Hill (S)	England	11A	216.928 MHz	2.0 kW	33 m	Maidstone	01/12
Naish Hill	England	11A	216.928 MHz	1.9 kW	47 m	Chippenham	1D/09
Redruth	England	11A	216.928 MHz	1.8 kW	138 m	East Cornwall	04/03
Mapperley Ridge	England	11A	216.928 MHz	1.6 kW	46 m	Nottingham	30/08
Alexandra Palace	England	11A	216.928 MHz	1.5 kW	100 m	North London	0B/02
Eglwysilan	Wales	11A	216.928 MHz	1.2 kW	30 m	South Wales	24/02
Redmoss	Scotland	11A	216.928 MHz	1.2 kW	41 m	Southern Aberdeen	3E/13
Exeter	England	11A	216.928 MHz	1.0 kW	44 m	Exeter	0E/09
Colchester	England	11A	216.928 MHz	1.0 kW	39 m	Colchester	06/05
Toot Hill	England	11A	216.928 MHz	1.0 kW	63 m	Southampton	02/04
Wye	England	11A	216.928 MHz	1.0 kW	43 m	Ashford Kent	01/09
Reigate	England	11A	216.928 MHz	955 W	51 m	S. London and E. Surrey	0B/05
Dunkirk	England	11A	216.928 MHz	900 W	90 m	Dunkirk	01/0D
BT Tower	England	11A	216.928 MHz	800 W	190 m	Central London	08/17
Puttocks Hill	England	11A	216.928 MHz	600 W	51 m	Bury St Edmunds	31/0a
Whitehawk Hill	England	11A	216.928 MHz	600 W	39 m	Brighton	0A/0E
Poole	England	11A	216.928 MHz	391 W	52 m	Poole	0D/07
Stoke Holy Cross	England	11A	216.928 MHz	391 W	102 m	Norwich	33/02
Glasgow - William Street	Scotland	11A	216.928 MHz	300 W	84 m	Central Glasgow	39/02
Bincombe Hill	England	11A	216.928 MHz	235 W	48 m	Weymouth & Dorchester	0D/03
Hastings	England	11A	216.928 MHz	200 W	46 m	Hastings	0A/06
Icomb Hill	England	11A	216.928 MHz	139 W	40 m	Bourton-on-the-Water	1B/05
Over Norton	England	11A	216.928 MHz	112 W	27 m	Chipping Norton	12/06
ELY WT	England	11A	216.928 MHz	40 W	35 m	Ely	15/07
Aylesbury ATE	England	11A	216.928 MHz	30 W	29 m	Aylesbury	16/06
Newcastle upon Tyne - Cale Cross House	England	11A	216.928 MHz	25 W	62 m	Newcastle-upon-Tyne	34/15
Southend TE	England	11A	216.928 MHz	24 W	40 m	Southend	06/13
Doncaster - Shaftesbury House	England	11A	216.928 MHz	22 W	47 m	Doncaster	2D/06
Market Drayton	England	11A	216.928 MHz	19 W	24 m	Market Drayton	37/07
Cathcart	Scotland	11A	216.928 MHz	10 W	66 m	Cathcart	39/0E
Glasgow Glenfinnan Road	Scotland	11A	216.928 MHz	10 W	44 m	Glasgow - central	39/0B
Dartford Tunnel	England	11A	216.928 MHz	0 W	0 m	Dartford Tunnel

Radiation pattern

Its strongest transmitter with a published pattern, Wrotham. Other transmitters of this ensemble may shape their signal differently.

Radiates most strongly toward the north (350°), 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.