South London small-scale

DAB ensemble · block 9A · 4 transmitters

Ensemble identifier: C225
Block: 9A
Frequency: 202.928 MHz
Licence: DS105104
Area: South London
Services: 16 radio

On the map

Where South London small-scale is radiated from — 4 transmitters [V], Ofcom's published positions. This says nothing about how far the signal reaches; it is not a coverage map.

What it carries

Riverside RadioCongregation 221 GeronimoLondonMusicRadioSelect RadioCosoro AfrobeatsWestsidePersianMixRadioFlex FMCroydon FMFG Chic LondonSmooth Jazz24/7TBA3Boom RockCHDABUK1047 Subjam

Transmitters

4 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	TII
Croydon Town	England	9A	202.928 MHz	250 W	134 m	36/0C
Marylebone Campus (UofW)	England	9A	202.928 MHz	149 W	85 m	14/0B
Shooters Hill	England	9A	202.928 MHz	149 W	23 m	0B/0E
Isleworth - Easedale House	England	9A	202.928 MHz	100 W	58 m	36/09

Radiation pattern

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

Radiates most strongly toward the north-east (60°), 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.