menuMENU    UK Free TV logo Freeview



Click to see updates

Full Freeview on the Hemel Hempstead (Hertfordshire, England) transmitter

first published this on - UK Free TV
sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps51.729,-0.426 or 51°43'43"N 0°25'34"Wsa_postcodeHP3 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 25/09/2023 Pixelation or flickering on some or all channels Digital tick

Choose from three options: ■ List by multiplex ■ List by channel number ■ List by channel name

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.

 V max
C40 (626.0MHz)214mDTG-2,000W
Channel icons
1 BBC One (SD) London, 2 BBC Two England, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 15 others

 V max
C43 (650.0MHz)214mDTG-2,000W
Channel icons
3 ITV 1 (SD) (London), 4 Channel 4 (SD) London ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 London ads, 18 More4, 26 ITV4, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (London),

 V max
C46 (674.0MHz)214mDTG-2,000W
Channel icons
46 5SELECT, 101 BBC One HD London, 102 BBC Two HD England, 103 ITV 1 HD (ITV London), 104 Channel 4 HD London ads, 105 Channel 5 HD, 106 BBC Four HD, 109 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

 V max
C37 (602.0MHz)214mDTG-82,000W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 Great! Movies Action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 69 HorrorXtra, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 91 WildEarth, 203 CITV, 208 Pop Player, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 16 others

 V max
C31 (554.0MHz)230mDTG-82,000W
Channel icons
 Smithsonian Channel, 11 Sky Arts, 17 Really, 19 Dave, 31 E4 Extra, 36 pick, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 70 Quest +1, 71 That's 60s, 74 Yesterday +1, 75 That's 70s, 233 Sky News, plus 9 others

 V max
C29 (538.0MHz)230mDTG-82,000W
Channel icons
 Quest Red +1,  Classic Hits, 12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 73 HobbyMaker, 76 That's 80s, 82 Talking Pictures TV, 83 Together TV, 84 PBS America, 90 Together TV +1, 235 Al Jazeera Eng, plus 19 others

DTG-8 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?

regional news image
BBC London 4.9m homes 18.4%
from London W1A 1AA, 30km southeast (138°)
to BBC London region - 55 masts.
regional news image
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?

1984-971997-981998-20122012-1318 Apr 2018

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
Mux 1*, Mux 2*, Mux A*, Mux B*(-14dB) 400W
Mux C*, Mux D*(-17dB) 200W

Which companies have run the Channel 3 services in the Crystal Palace transmitter area

Sep 1955-Jul 1968Associated-Rediffusion†
Sep 1955-Jul 1968Associated TeleVision◊
Jul 1968-Dec 1992Thames†
Jul 1968-Feb 2004London Weekend Television♦
Jan 1993-Feb 2004Carlton†
Feb 2004-Dec 2014ITV plc♦
Feb 2004-Dec 2014ITV plc†
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Hemel Hempstead was not an original Channel 3 VHF 405-line mast: the historical information shown is the details of the company responsible for the transmitter when it began transmitting Channel 3.

Friday, 14 October 2011
Transmitter engineering

12:44 PM

HEMEL HEMPSTEAD transmitter - Analogue BBC TWO Weak Signal from 06:50 on 12 Oct to 07:10 on 12 Oct BBC TWO Weak Signal from 07:19 on 12 Oct to 14:30 on 12 Oct [BBC]

link to this comment
Transmitter engineering's 144,129 posts xx flag
Transmitter engineering

12:44 PM

HEMEL HEMPSTEAD transmitter - Analogue BBC TWO Weak Signal from 06:50 on 12 Oct to 07:10 on 12 Oct BBC TWO Weak Signal from 07:19 on 12 Oct to 14:30 on 12 Oct [BBC]

link to this comment
Transmitter engineering's 144,129 posts xx flag
Saturday, 15 October 2011

12:11 PM

Iona: If you can get analogue and not digital, then this, at your location, would be because you are using the Hemel Hempstead Town transmitter.

You should have a full Freeview service from the Hemel Hempstead (main) transmitter - can you please see Freeview reception has changed? | - independent free digital TV advice for things to try.

link to this comment
Briantist's 38,899 posts GB flag
Monday, 17 October 2011
10:42 AM


I live at 19 Monnery Road in Archway, N19 5SA. It's first time I'm buying and aerial so I'm new to all this. I plan to get a HD Freeview indoor aerial. Can someone advise where I should be pointing this aerial to?

Many Thanks,

link to this comment
Fabian's 1 post GB flag
Fabian's: mapF's Freeview map terrainF's terrain plot wavesF's frequency data F's Freeview Detailed Coverage
Mike Dimmick

5:53 PM

Fabian: Digital UK suggest that the best option for you is the main Crystal Palace transmitter, which is roughly south-south-east (162°) and 16 km away.

It's very likely that your neighbours' aerials are already facing that direction.

Do be careful of aerials advertised on the Internet and in DIY stores. There is nothing 'HD' or 'Freeview' about any aerial. An aerial *might* be termed 'digital' if it has a balun, a device that better matches the properties of the aerial to the properties of the cable; cheaper aerials designed before digital started might not have had a balun, but an aerial not labelled as 'digital' might still have one.

I assume, by the way, that you're talking about a roof aerial. Indoor aerials can almost never give as good a result as a roof aerial - the elements are always under-sized, UHF signals don't travel well through walls and signals will be attenuated by having to come through neighbours' walls. A small aerial designed for a roof-top can work in a loft, but it's still advisable to put it outside if you can.

link to this comment
Mike Dimmick's 2,486 posts GB flag
10:39 PM
Hemel Hempstead

I've lost all analogue signal and cannot pick up a digital signal on digital tvs. This has happened in the last couple of days.
I have a loft aerial which may well be quite old but has up till now always provided a good signal, any suggestions as to the cause of the loss of signal?

link to this comment
Keith's 1 post GB flag
Keith's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
Thursday, 20 October 2011
Friday, 21 October 2011
2:47 PM

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

link to this comment
Norman's 4 posts GB flag
Norman's: mapN's Freeview map terrainN's terrain plot wavesN's frequency data N's Freeview Detailed Coverage

2:53 PM

Norman: It's both on the Switchover events September- December 2011 | - 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.

link to this comment
Briantist's 38,899 posts GB flag
Tuesday, 1 November 2011
Transmitter engineering

3:51 PM

HEMEL HEMPSTEAD transmitter - Analogue BBC ONE Weak Signal from 14:19 today to 14:34 today [BBC]

link to this comment
Transmitter engineering's 144,129 posts xx flag
Select more comments

Your comment please
Please post a question, answer or commentIf you have Freeview reception problems before posting a question your must first do this Freeview reset procedure then see: Freeview reception has changed, Single frequency interference, and Freeview intermittent interference.

If you have no satellite signal, see Sky Digibox says 'No Signal' or 'Technical fault'

If you have other problems, please provide a full (not partial) postcode (or preferably enter it in box at the top right) and indicate where if aerial is on the roof, in the loft or elsewhere.

UK Free TV is here to help people. If you are rude or disrespectful all of your posts will be deleted and you will be banned.

Privacy policy: UK Free Privacy policy.