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 30/09/2024 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, 20 October 2011
Friday, 21 October 2011
N
Norman2:47 PM
Berkhamsted
Brian
The Bedmond transmitter (Hemel Hempstead) did a shift of channels a few weeks ago. No mention anywhere that I can find about this.
BBC1 etc have shifted and now the 6 multiplexs are :
Ch68, Ch65, ch62, Ch59, Ch55 and Ch56.
I only found out by mistake when BBC1 went walkabout.
To compound the problem, Sandy Heath are now broadcasting at higher levels, so an automatic search is out of the question for me as its signal is stronger but quality worse - and my antenna is vertical pointing at right angles to Sandy.
This might help some of the people in 'iffy' areas (not that Bedmond has ever been the greatest thing since sliced bread)
In case you are wondering, I'm at HP4 2JL
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Norman's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage
Norman: It's both on the Switchover events September- December 2011 | ukfree.tv - independent free digital TV advice page and at the top of this one:
After switchover frequency notes (¶):
Hemel Hempstead BBC A is expected to temporarily move to channel 56 (at 40W ERP) some months in advance of digital switchover, but will adopt its final allocation at switchover.
Hemel Hempstead SDN is expected to temporarily move to channel 68 (at 40W ERP) some months in advance of digital switchover, but will adopt its final allocation at switchover.
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Wednesday, 7 December 2011
B
Brian English12:43 PM
Hemel Hempstead Tx
Have lost all c68 850MHz channels
No reported problems / engineering works
Is somebody telling porkies?
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B
Brian English3:47 PM
Hemel Hempstead Tx
c68 miraculously restored approx 14:15
Channel 5 +1 now on this mux
(Freeview channel 44)
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Thursday, 15 December 2011
D
D ESSERY2:58 PM
Watford
WD25 9PS
We cannot record any programmes on BBC1 and 2 We can receive all other stations and also record any programmes including analogue stations ITV 1 and Channel 4. When trying to record BBC1 and 2 all we get is NO SIGNAL We would appreciated any information as to why this is happening
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D's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Monday, 19 December 2011
S
sheila taiar8:41 PM
Bushey
I live
Bushey heath wd23 1gd
I can not receive channels
3 4 5 6 13
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sheila's: ...
sheila taiar: The Digital UK predictor isn't too sparkling and the channels you identify are predicted as being the least best.
Try manually tuning to Ch22.
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K
KMJ,Derby10:09 PM
D ESSERY: Check that BBC1 & BBC2 are tuned to the correct frequency for the transmitter that your aerial is pointing to. If your aerial is pointing NNW To Hemel Hempstead and set with the rods vertical the correct frequency is C56. If you have found weak signals from Crystal Palace or Sandy Heath in the early part of the channel scan, or if your receiver is still tuned to the former Mux 1 frequency C48 it would explain the "No signal" messages being displayed. You will need to clear the channel list by doing a factory reset, then either manually insert the correct frequencies (C56, C55, C68, C59-, C62, C65) or commence the scan with the aerial unplugged, wait until the scan reaches about C53 then plug the aerial back in.
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Friday, 23 December 2011
P
PETER MERRITT5:37 PM
St. Albans
Have recently had a New aerial fitted and have lost all hd channels they say hemel hemstead have not turned hd on yet is that right ?
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PETER's: ...
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