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 - Hemel Hempstead transmitter: Possible effect on TV reception week commencing 25/09/2023 Pixelation or flickering on some or all channels 
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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 a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: .
If you want to watch these channels, your aerial must point to one of the 80 Full service Freeview transmitters. For more information see the will there ever be more services on the Freeview Light transmitters? 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)
The Hemel Hempstead (Hertfordshire, England) mast is a public service broadcasting (PSB) transmitter, it does not provide these commercial (COM) channels: .
If you want to watch these channels, your aerial must point to one of the 80 Full service Freeview transmitters. For more information see the will there ever be more services on the Freeview Light transmitters? 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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Sunday, 2 August 2015
Transmitter engineering
5:42 AM
5:42 AM
HEMEL HEMPSTEAD transmitter - DAB: BBC National DAB Radio Weak Signal from 10:52 on 31 Jul to 14:17 on 31 Jul. [BBC]
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Wednesday, 2 September 2015
N
Nichola Tully5:34 AM
Hemel Hempstead
Hi, we live in Bourne End, Hemel Hempstead HP1 2RL
Every night now for around the past year or so, 50% of the Digital channels become unwatchable at 10pm. They are fine during the day with good reception across the board, including my favourite two channels 21 & 30 ( 5* and 5USA )
This fault has been bugging me for a long time, we've tried boosters of various varieties, but nothing helps after the 10pm deadline.
Can anybody shed any light on this mysterious fault??
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Nichola's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Nichola Tully: Can you please have a look at the Freeview intermittent interference page that lists all the things that might cause this?
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Transmitter engineering
6:44 AM
6:44 AM
HEMEL HEMPSTEAD transmitter - Possible weak signal [DUK]
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Thursday, 10 September 2015
Transmitter engineering
4:32 AM
4:32 AM
HEMEL HEMPSTEAD transmitter - Possible weak signal [DUK]
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Sunday, 20 September 2015
M
Matt5:32 PM
Currently having problems with ITV (channel 3). All other channels are max strength and signal quality but ITV keeps dropping out and the signal strength and quality is very low. Any ideas?
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Monday, 21 September 2015
M
MikeP8:15 AM
Matt:
To be able to suggest possible solutions we would need to know your approximate location, preferably shown by a post code relevant to your home or that of a nearby post office, shop or public building.
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Monday, 2 November 2015
J
John 6:09 PM
Hi, for the past few days several free view channels has been breaking up. Initially this was limited to bbc channels now I cannot get any signal on bbc or itv channels. Others e.g. More4 are fine. Is there a problem with the Bedmond transmitter?
I'm in HP3.
Regards,
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M
MikeB8:11 PM
Macclesfield
John : We need a proper postcode to check what your signal should be. However, check some things.
If your getting some channels, but not others, a damaged wire, etc might be the problem. Swap out your old aerial lead from the TV into the wall, just to check. That might cure it.
If its doesn't, then follow the signal path upwards, and of course check that your tuned to the correct transmitter.
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MikeB's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Tuesday, 3 November 2015
J
John Clark7:27 PM
Thanks Mike. All the cables were fine. The same channels were lost on the TV upstairs and low and behold after a while they all came back OK.
Did get some pixelation later on which again seemed confined mainly to the BBC channels.
BTW - the rest of my post code is 8QD.
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