BOOM ROCK

DAB

On the map

Where BOOM ROCK is radiated from — 17 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
North London small-scale	9B	C1C6	6	Boom Rock	North London
West London small-scale	8B	C21F	5	Boom Rock	West London
South London small-scale	9A	C225	4	Boom Rock	South London
Warminster Devizes and Trowbridge small-scale	9C	C20A	3	BOOM ROCK	Warminster Devizes and Trowbridge
Nottingham small-scale	7D	C20E	1	BOOM ROCK	Nottingham

Radiation pattern

Peregrine House 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 (0°), 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.