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 29/04/2024 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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Thursday, 15 January 2015
Transmitter engineering
5:09 PM
5:09 PM
HEMEL HEMPSTEAD transmitter - DAB: BBC National DAB Radio Weak Signal from 12:32 today. [BBC]
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Friday, 16 January 2015
Transmitter engineering
4:32 AM
4:32 AM
HEMEL HEMPSTEAD transmitter - DAB: BBC National DAB Radio Weak Signal from 12:32 yesterday to 13:45 yesterday. [BBC]
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Saturday, 17 January 2015
Transmitter engineering
4:31 AM
4:31 AM
HEMEL HEMPSTEAD transmitter - DAB: BBC National DAB Radio Weak Signal from 12:32 on 15 Jan to 13:45 on 15 Jan. [BBC]
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Saturday, 24 January 2015
K
kim3:03 PM
Milton Keynes
if im in mk2 3mu area of bletchley milton keynes what way do i point the Ariel
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kim's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
J
jb385:55 PM
kim: Sandy Heath is indicated as being the station that covers your area, the station being located @ 37 miles away on a bearing of 61 degrees, the aerial being mounted horizontally, i.e: the elements lying flat.
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Saturday, 14 March 2015
B
Brian Burgess1:33 PM
In the last week my picture has started to break up. I have reset my freeview, BBC channels are most effected
Has something changed at the transmitted, has the transmitter a problem or has the signal strength been reduced?
best regards
Brian
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R
Robert Smith3:00 PM
Once yesterday (13th March 2015) and many times today the Tx has gone off (signal level goes from high to nil) for a minute or more on all channels, TV, Radio, Data, HD etc. confirmed on two separate decoders. This is still happening at 1500 14/03/2015.
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M
MikeB9:47 PM
Robert Smith: You need to give a postcode, becuase otherwiese we have no idea as too what your signal should be like. However, if its going from 0 to 100, etc, then thats sounds like too much signal. Search for 'too much of a good thing' on this site.
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Wednesday, 29 April 2015
G
Gary Briggs8:23 PM
Hemel Hempstead
Within the last 3 weeks our HD channels have disappeared completely. Up until then they had been great. Also, now the SD channels such as BBC1/2 etc come and go, but most of the time are not watchable. Nothing else has changed here at my end and so I was wondering if anything had changed at the HH transmitter.
I have tried a new Booster and new Antiference device but nothing appears to help. We live in HP3 0LL
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Gary's: mapG's Freeview map terrainG's terrain plot wavesG's frequency data G's Freeview Detailed Coverage
J
jb389:55 PM
Gary Briggs: Indications suggest that you are receiving Freeview from the Hemel Hempstead Town transmitter located at just over 1 mile away, no faults being listed against the transmitter nor is any engineering work taking place at the station, therefore although you have tried a few measures to overcome the problem such as trying a new booster, your best policy would be to ascertain if the problem is actually associated with your installation or not by checking with some other household in the area to find out if they are also suffering from similar problems with reception.
My reason for suggesting this being two fold, the first being the fact of the signal path from the low powered (8 watts) transmitter being obstructed by dense vegetation in the Felden Lane area, secondly that there is also the possibility of 4G being involved, as the frequencies used by H / Town transmitter are in the range potentially most affected by any 4G transmission tests possibly being conducted in the area.
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