Henley

England · TV and FM

Position: 51.533419, -0.877019
Grid reference: SU77998221
Nation: England
Ground height: 109 m
Antenna height: 48 m
Aerial group: Group B — C35–53, the middle
Polarisation: Vertical
BBC region: London
ITV region: London
ITV news region: London
Parent transmitter: Crystal Palace
Ofcom site number: 10110

The position is our conversion of Ofcom's grid reference SU77998221 from OSGB36 to WGS84 [V]. Ofcom publish no latitude and longitude for television sites. The transform is verified rather than assumed: on the 3,403 radio records that carry both, it reproduces Ofcom's own coordinates to within 0.1 m.

How far it reaches

The share of the UK's 238,895 Census Output Areas where this mast is the strongest signal of its kind. Not the share it reaches at all — most places can receive several transmitters, and only one of them can be the best.

Band	Best signal in
Television	0.02% of UK Output Areas	a relay, serving a local area
FM radio	0.04% of UK Output Areas	a relay, serving a local area

On the map

Where Henley is the strongest signal for television and FM radio.

Television

Multiplexes transmitted from this site, as published by Ofcom.
Mux	Freeview name	Channel	Frequency	ERP	System	Operator
PSB1	BBC A	C41	634 MHz	20 W	DVB-T	BBC
PSB2	D3&4	C44	658 MHz	20 W	DVB-T	Digital 3&4 (ITV/Channel 4)
PSB3	BBC B	C47	682 MHz	20 W	DVB-T2	BBC

FM radio

FM services. ERP is published separately per polarisation; a dash means nothing is radiated in that plane.
Station	Frequency	ERP (H)	ERP (V)	Height	RDS name	PI code	Pattern
BBC Radio Berkshire	94.6 MHz	125 W	125 W	37 m	BBCBerks	C71A	HV
Heart	103.4 MHz	50 W	50 W	29 m	Heart___	C361	HV