Nation Rocks

DAB

On the map

Where Nation Rocks is radiated from — 18 transmitters [V], Ofcom's published positions. This says nothing about how far the signal reaches; it is not a coverage map.

DAB

The ensembles carrying this station. Every transmitter of an ensemble carries all of its services, so the transmitter list belongs on the ensemble's own page.
Ensemble	Block	EId	Transmitters	Broadcast as	Area
South East Wales	12C	C189	15	Nation Rocks	South East Wales
Salisbury small-scale	8A	C1D8	2	Nation Rocks	Salisbury
Portsmouth small scale	8B	C1CD	1	Nation Rocks	Portsmouth

Radiation pattern

Wenvoe publishes the strongest DAB 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 (40°), 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.