Full Freeview on the Hemel Hempstead (Hertfordshire, England) transmitter
 | Google map |  | Bing map |  | Google Earth |  | 51.729,-0.426 or 51°43'43"N 0°25'34"W |  | HP3 8SA |
The symbol shows the location of the Hemel Hempstead (Hertfordshire, England) transmitter which serves 74,000 homes. The bright green areas shown where the signal from this transmitter is strong, dark green areas are poorer signals. Those parts shown in yellow may have interference on the same frequency from other masts.
Are there any planned engineering works or unexpected transmitter faults on the Hemel Hempstead (Hertfordshire, England) mast?
HEMEL HEMPSTEAD transmitter - DAB: Slightly reduced power due to essential engineering from 30 May 10:00 until 30 May 15:56. . 
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Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
The Hemel Hempstead (Hertfordshire, England) mast is not one of the extended Freeview HD (COM7 and COM8) transmitters, it does not provide these high definition (HD) channels: .
If you want to watch these HD channels, either use Freesat HD, or move your TV aerial must point to one of the 30 Full Freeview HD transmitters. For more information see the want to know which transmitters will carry extra Freeview HD? page.
Which Freeview channels does the Hemel Hempstead transmitter broadcast?
If you have any kind of Freeview fault, follow this Freeview reset procedure first.Digital television services are broadcast on a multiplexes (or Mux) where many stations occupy a single broadcast frequency, as shown below.
64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)
Are you trying to watch these 0 Freeview HD channels?
The Hemel Hempstead (Hertfordshire, England) mast is not one of the extended Freeview HD (COM7 and COM8) transmitters, it does not provide these high definition (HD) channels: .
If you want to watch these HD channels, either use Freesat HD, or move your TV aerial must point to one of the 30 Full Freeview HD transmitters. For more information see the want to know which transmitters will carry extra Freeview HD? page.
Which BBC and ITV regional news can I watch from the Hemel Hempstead transmitter?
BBC London 4.9m homes 18.4%
from London W1A 1AA, 30km southeast (138°)
to BBC London region - 55 masts.
ITV London News 4.9m homes 18.4%
from London WC1X 8XZ, 31km southeast (135°)
to ITV London region - 55 masts.
How will the Hemel Hempstead (Hertfordshire, England) transmission frequencies change over time?
| 1984-97 | 1997-98 | 1998-2012 | 2012-13 | 18 Apr 2018 | |||||
| B E T | B E T | B E T | E T | K T | |||||
| C29 | ArqB | ||||||||
| C31 | ArqA | ||||||||
| C34 | _local | ||||||||
| C37 | SDN | ||||||||
| C40 | BBCA | ||||||||
| C41 | ITVwaves | ITVwaves | ITVwaves | D3+4 | |||||
| C42 | _local | ||||||||
| C43 | D3+4 | ||||||||
| C44 | BBC2waves | BBC2waves | BBC2waves | BBCA | |||||
| C46 | BBCB | ||||||||
| C47 | C4waves | C4waves | C4waves | BBCB | |||||
| C50tv_off | SDN | ||||||||
| C51tv_off | BBC1waves | BBC1waves | BBC1waves | ||||||
| C55tv_off | ArqB | ||||||||
| C59tv_off | ArqA |
tv_off Being removed from Freeview (for 5G use) after November 2020 / June 2022 - more
Table shows multiplexes names see this article;
green background for transmission frequencies
Notes: + and - denote 166kHz offset; aerial group are shown as A B C/D E K W T
waves denotes analogue; digital switchover was 4 Apr 12 and 18 Apr 12.
How do the old analogue and currrent digital signal levels compare?
| Analogue 1-4 | 10kW | |
| SDN, ARQA, ARQB, BBCA, D3+4, BBCB | (-7dB) 2kW | |
| Mux 1*, Mux 2*, Mux A*, Mux B* | (-14dB) 400W | |
| Mux C*, Mux D* | (-17dB) 200W |
Local transmitter maps
Hemel Hempstead Freeview Hemel Hempstead DAB Crystal Palace TV region BBC London LondonWhich companies have run the Channel 3 services in the Crystal Palace transmitter area
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Monday, 30 January 2023
Transmitter engineering
5:08 AM
5:08 AM
Hemel Hempstead transmitter - Hemel Hempstead transmitter: Possible effect on TV reception week commencing 30/01/2023 Screen may go black on some or all channels [DUK]
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Monday, 6 February 2023
Transmitter engineering
5:07 AM
5:07 AM
Hemel Hempstead transmitter - Hemel Hempstead transmitter: Possible effect on TV reception week commencing 06/02/2023 Screen may go black on some or all channels [DUK]
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Monday, 13 February 2023
Transmitter engineering
5:07 AM
5:07 AM
Hemel Hempstead transmitter - Hemel Hempstead transmitter: Possible effect on TV reception week commencing 13/02/2023 Screen may go black on some or all channels [DUK]
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Tuesday, 14 February 2023
Please advise as to when free view service will be restored in HP2 area.
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S
StevensOnln111:47 PM
John Mulrooney: According to the post above yours there is engineering work taking place at the Hemel Hempstead transmitter this week. As this kind of work is often dependant on weather conditions etc they don't usually provide a completion date.
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Monday, 20 February 2023
Transmitter engineering
5:08 AM
5:08 AM
Hemel Hempstead transmitter - Hemel Hempstead transmitter: Possible effect on TV reception week commencing 20/02/2023 Screen may go black on some or all channels [DUK]
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Friday, 14 April 2023
Transmitter engineering
9:46 AM
9:46 AM
Hemel Hempstead transmitter - Hemel Hempstead transmitter: Possible effect on TV reception week commencing 10/04/2023 Screen may go black on some or all channels [DUK]
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Monday, 17 April 2023
Transmitter engineering
4:07 AM
4:07 AM
Hemel Hempstead transmitter - Hemel Hempstead transmitter: Possible effect on TV reception week commencing 17/04/2023 Screen may go black on some or all channels [DUK]
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Tuesday, 2 May 2023
Transmitter engineering
10:08 AM
10:08 AM
Hemel Hempstead transmitter - Hemel Hempstead transmitter: Possible effect on TV reception week commencing 01/05/2023 Pixelation or flickering on some or all channels [DUK]
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Tuesday, 30 May 2023
Transmitter engineering
10:09 AM
10:09 AM
HEMEL HEMPSTEAD transmitter - DAB: Slightly reduced power due to essential engineering from 30 May 10:00. . [BBC]
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