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.
This transmitter has no current reported problems
The BBC and Digital UK report there are no faults or engineering work on the Hemel Hempstead (Hertfordshire, England) transmitter._______
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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Monday, 30 April 2018
M
Me at Home11:22 AM
This site also lists up-to-date information about frequency changes etc.
Freeview frequency changes: 18th April 2018 - a516digital
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Saturday, 8 September 2018
M
Malcolm Trotter11:45 AM
Hi--since yesterday (Friday AM) i have been unable to receive HD channels on both my TV sets which receive signals from a roof mounted aerial- carried out auto tune on both sets but still no HD channels. I live in Abbots Langley Herts and receive signal from Hemel hempstead transmitter which i note was having work undertaken during the early hours of Friday.
Any idea what may be my problem?
Many Thanks
Malcolm
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Sunday, 9 September 2018
MikeP
10:30 AM
10:30 AM
Malcolm Trotter:
Please put your full post code into this website so that we can check the predicted reception conditions at you location.
There has been some engineerin g work done on the transmitter in the last few days and you may now find that a wideband aerial is required to get all the available channels.
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M
Malcolm Trotter1:06 PM
Abbots Langley
MikeP: Thank you for your reply-- my aerial is rooftop mounted pointing directly at the Hemel Hempstead transmitter which i can see from my property. The aerial is approx ten years old and has not been problematic. As stated earlier i am receiving all other channels on both my TV sets with no interference.
Ive tried the Freeview reset on both sets with no changes resulting.
I have typed in my postcode into this website and the web shows i should be receiving a good signal including HD signals from the Hemel transmitter
i was aware of the problem on my main TV when i turned it on Friday morning with a message no channels available where upon i carried out Auto Retune resulting in the absence of HD channels.
My other TV was still receiving channels but reported the HD channels as lost or weak signal. i carried out an auto retune on the second set but to no avail.
regards,
Malcolm T
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Malcolm's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Monday, 10 September 2018
A
Anthony Collins9:44 AM
Transmitter engineering: Hi I'm a local handyman in Hemel Hempstead and I have received lots of customers contact me over losing channels like BBC1&2, is there a problem with the transmitter or is this a permanent frequency change and will they have to buy a new aerial?
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S
StevensOnln111:30 AM
Malcolm Trotter & Anthony Collins: Since the recent frequency changes, viewers using the Hemel Hempstead transmitter may need a wideband aerial to receive all multiplexes. If the missing channels cannot be restored by retuning, you should contact the Freeview Advice Line (see link below) who will arrange for a replacement wideband aerial to be fitted (free of charge for viewers who don't have satellite or cable).
Important changes to Freeview TV signals | Freeview
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M
Malcolm Trotter3:51 PM
Abbots Langley
StevenOnln1
Thank you for the advice-- called Freeview re the above and attempted several manual and auto retunes over the phone but still have same problem. Freeview advise they have no record of any Hemel Hempstead transmitter recent retunes or recent engineering work.
Freeview did however state they had received a similar channel loss inquiry today from the same area
New free replacement aerial only undertaken if they have carried out a planned retune with a transmitter.
Was advised to wait a couple days as the missing channels may return (similarly advised by local TV shop).
Looks like might be an aerial issue and was given the number of a local aerial company they approve based in Apsley
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Malcolm's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
M
Malcolm Trotter8:25 PM
Abbots Langley
All-- Whilst watching TV this evening at approx 7.55pm i lost all programmes with an on screen message "signal lost" approx two minutes later programmes returned. i then carried out an Auto retune and the missing HD channels have returned! Other TV set now has HD channels also.
Of interest i note the Hemel transmitter is/has undergone Transmitter Engineering affecting HD channels this evening.
Coincidance or what?
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Malcolm's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Tuesday, 11 September 2018
A
Anthony Collins10:03 AM
StevensOnln1: Bedmond transmitter is now back to normal and you can get all the channel
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Monday, 24 September 2018
M
Mike Hahn11:41 AM
I really would value some help. I visited the website but I must admit that I understand little. Sorry about that, so I ask for help.
I bought a reasonable qulaity TV recently but have encountered a problem. My signal source is Terristral Freeview (Chimeney aerial) from a mast in Bedmond (Hemel Hempstead).
I had not realised tha lack of HD signals. The one that matters to me is BBC News (231) as that is the one that I try to watch most. It is in SD and hard to watch.
So, my qestion is when will this transmitter provide HD?
Mike.
PS I cann't afford to switch to cable.
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