Hemdean

England · TV

Position: 51.480310, -0.978983
Grid reference: SU71007620
Nation: England
Ground height: 49 m
Antenna height: 43 m
Aerial group: Group K — C21–48, wideband across the post-clearance band
Polarisation: Vertical and Horizontal
BBC region: South
ITV region: Meridian
ITV news region: Meridian Thames Valley
Parent transmitter: Hannington
Ofcom site numbers: 12609, 12620

The position is our conversion of Ofcom's grid reference SU71007620 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

On the map

Where Hemdean is the strongest signal for television.

Television

Multiplexes transmitted from this site, as published by Ofcom. Ofcom list this mast more than once — usually one row per polarisation — so the last column says which row each multiplex comes from.
Mux	Freeview name	Channel	Frequency	ERP	System	Operator	Ofcom row
PSB1	BBC A	C33	570 MHz	32 W	DVB-T	BBC	Hemdean VP
PSB1	BBC A	C33	570 MHz	8 W	DVB-T	BBC	Hemdean HP
PSB2	D3&4	C36	594 MHz	32 W	DVB-T	Digital 3&4 (ITV/Channel 4)	Hemdean VP
PSB2	D3&4	C36	594 MHz	8 W	DVB-T	Digital 3&4 (ITV/Channel 4)	Hemdean HP
PSB3	BBC B	C48	690 MHz	32 W	DVB-T2	BBC	Hemdean VP
PSB3	BBC B	C48	690 MHz	8 W	DVB-T2	BBC	Hemdean HP