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 27/11/2023 Pixelation or flickering on some or all channels 
_______
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
|
|
Thursday, 15 September 2011
S
Sylvia1:45 PM
Watford
My aerial is on the roof and the TV is a PanasonicTX-32LXD85
On your advice I went back to' Shipping Condition' and now all is OK
Very many thanks from WD19 4PE
| link to this comment |
Sylvia's: mapS's Freeview map terrainS's terrain plot wavesS's frequency data S's Freeview Detailed Coverage
M
Mike Dimmick7:37 PM
A G Halden: You need to retune your box, these channels have moved from C48 to C56. You should do a full reset, also called full retune, default setting, first-time installation, virgin mode, or reinstall all channels.
| link to this comment |
Friday, 16 September 2011
HEMEL HEMPSTEAD transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air; DSO related from 03:36 yesterday to 04:01 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 01:34 yesterday to 04:20 yesterday Analogue BBC ONE Off Air from 01:35 on 14 Sep to 02:03 on 14 Sep [BBC]
| link to this comment |
HEMEL HEMPSTEAD transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air; DSO related from 03:36 yesterday to 04:01 yesterday BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 01:34 yesterday to 04:20 yesterday Analogue BBC ONE Off Air from 01:35 on 14 Sep to 02:03 on 14 Sep [BBC]
| link to this comment |
HEMEL HEMPSTEAD transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air; DSO related from 03:36 on 14 Sep to 04:01 on 14 Sep BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 01:34 on 14 Sep to 04:20 on 14 Sep Analogue BBC ONE Off Air from 01:35 on 14 Sep to 02:03 on 14 Sep [BBC]
| link to this comment |
HEMEL HEMPSTEAD transmitter - Freeview BBC Digital TV (Four, Cbeebies, Parliament, 3... Off Air; DSO related from 03:36 on 14 Sep to 04:01 on 14 Sep BBC Digital TV (One, Two, Three, CBBC, News) Off Air; DSO related from 01:34 on 14 Sep to 04:20 on 14 Sep Analogue BBC ONE Off Air from 01:35 on 14 Sep to 02:03 on 14 Sep [BBC]
| link to this comment |
Saturday, 17 September 2011
B
Bernard Hatt11:42 AM
Just found out about the channel change in Hemel:
Mux 1 690MHz -> 754MHz
Mux A 786MHz -> 850MHz
(re-tune and everything is fine - I'm almost line of sight to the transmitter).
Is there any way to subscribe just frequency/channel changes like this, for just this transmitter, so I can find out in advance ?
Thanks,
Bernard
| link to this comment |
K
KMJ,Derby12:46 PM
Bernard Hatt: There are currently just two retune days planned for your area for DSO. These are 4th April 2012 and 18th April 2012.
| link to this comment |
Thursday, 22 September 2011
J
John Macadam3:15 PM
Watford
Earlier this year we bought two new Freeview-enabled TVs. We had them set up with a new aerial on the roof, pointed towards Hemel Hempstead, and a new powered booster in the loft. Reception was broadly acceptable, although ITV channels tended to break up on occasion.
On Wednesday the 14th September you carried out some work on the transmitter. Following this, we re-tuned our TVs. We have found, however, that the BBC channels have been adversely affected. They are now worse than the ITV channels, and on one of our TVs they are unwatchable.
Is more work scheduled to fix this, or is there anything else we can do our end?
(Our postcode is WD17 4WF.)
| link to this comment |
John's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
Select more comments
Your comment please