North London small-scale

DAB ensemble · block 9B · 6 transmitters

Ensemble identifier: C1C6
Block: 9B
Frequency: 204.640 MHz
Licence: DS105091
Area: North London
Services: 31 radio

On the map

Where North London small-scale is radiated from — 6 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

6 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
Peregrine House	England	9B	204.640 MHz	400 W	83 m	North London
Southgate - Urban House	England	9B	204.640 MHz	300 W	20 m	North London
Stratford - Henniker Point	England	9B	204.640 MHz	200 W	64 m	North London
Notting Hill Gate - Camden Hill Towers	England	9B	204.640 MHz	125 W	57 m	North London
Greystead Road Lewisham	England	9B	204.640 MHz	90 W	35 m	North London
Southwood Park Highgate	England	9B	204.640 MHz	90 W	30 m	North London

Radiation pattern

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

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.