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 25/11/2024 Screen may go black 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, 9 June 2016
K
KMJ,Derby12:21 AM
Peter: yes, for the past few days the weather conditions have been such that in some areas signals that normally give good reception have been subject to interference from distant transmitters resulting in glitching and the dreaded 'no signal' being displayed for various periods of time, whilst some services were received loud and clear tens or hundreds of miles outside their normal range. If you retuned because the normal programmes were not being received it is likely that services you have been watching for the past week were from different transmitters to the one that your aerial is pointing to. Once conditions changed or returned to normal the strength of the alternative signals would diminish or the signals disappear altogether, making another retune necessary to restore the correct channel list.
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Friday, 9 September 2016
R
Richard Cooper11:23 AM
Hi, Brian (Briantist). Your Transmitter engineering info for Hemel Hempstead DAB today is appearing on the Hemel Hempstead Full Freeview web page instead of its DAB page. Probably a simple enough glitch for you to sort! Richard, Norwich.
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S
StevensOnln112:22 PM
Richard Cooper: I don't think it's a glitch. If you look around the site you'll see it's always done that for all transmitters. There probably isn't anything on the feed from BBC Engineering to differentiate between which page each message should appear on for the transmitter affected.
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Sunday, 4 February 2018
G
gtibb5:09 PM
There will be 2 retune events at Hemel Hempstead in March & April 2018:
21 March 2018: ArqB moves from Channel 55 to Channel 29.
18 April 2018: The PSB muxes BBC A/B & D 3+4 all move down one UHF channel from their present positions.
BBCA & D 3+4 swap places.
SDN Moves to Channel 37. ArqA moves to Channel 31.
Info from DigitalUK
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Monday, 26 March 2018
S
Sue Curran1:57 PM
I live in a small retirement estate in Abbots Langley (WD4.) Last Wednesday, our TVs were automatically retuned. We have since had no reception on many of our Freeview Channels. An aerial engineer visited, and claim the fault lay with the Transmitter. He said the missing channels should return within a few days.
We have now waited 5 days - manually retuning our TVs, which we were told would be necessary.
There has been no imprrovement.
Can you please help us?
Thank you.
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S
StevensOnln111:23 PM
Sue Curran: The engineering work related to the recent frequency changes was completed early in the morning at most affected transmitters. Engineering work of this type does not last for several days and there are no recent faults showing. So far only one group of channels have changed frequency at the Hemel Hempstead transmitter, however further changes are due to take place on 18th April. Which channels are you missing? You may need a new wideband aerial fitted, however you should be eligible to have this carried out free of charge if you don't have satellite or cable, which can be arranged by contacting the Freeview Advice Line (see link below).
Important changes to Freeview TV signals | Freeview
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Tuesday, 27 March 2018
S
Sue Curran1:38 PM
Thank you Steven. Very useful and helpful information.
Sue
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Monday, 9 April 2018
J
john2:00 PM
When will the BT Showcase channel (115) be broadcast from the Bedmond (Hemel) transmitter ?
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S
StevensOnln111:29 PM
john: It won't. It is being reported elsewhere that the BT Showcase channel is closing as BT are no longer required to show any free football matches on Freeview (some matches will be available to watch for free via BT Sport's website etc).
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Thursday, 12 April 2018
L
L Williams9:32 AM
I depend on a communal aerial.
It already needs adjusting after the March 2018 retune, which affected COM6.
In order to inform my management company, what exactly is changing on 18th April 2018?
Another question - why is it so difficult to get this information?
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