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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.

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.

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

MuxH/VFrequencyHeightModeWatts
PSB1
BBCA
 V max
C40 (626.0MHz)214mDTG-32,000W
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

PSB2
D3+4
 V max
C43 (650.0MHz)214mDTG-32,000W
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, 30 E4 +1, 35 ITV1 +1 (London),

PSB3
BBCB
 V max
C46 (674.0MHz)214mDTG-62,000W
Channel icons
56 5SELECT, 101 BBC One HD (England no regional news), 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

COM4
SDN
 V max
C37 (602.0MHz)214mDTG-82,000W
Channel icons
12 Quest, 20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 41 Legend, 42 GREAT! movies action, 46 Channel 5 +1, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 CBS Reality, 74 Dave ja vu, 78 TCC, 81 Blaze +1, 89 ITV4 +1, 203 CITV, 208 POP MAX, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, plus 15 others

COM5
ArqA
 V max
C31 (554.0MHz)230mDTG-82,000W
Channel icons
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, 57 Smithsonian Channel, 60 Drama +1, 70 Quest +1, 75 Yesterday +1, 83 Together TV, 233 Sky News, plus 8 others

COM6
ArqB
 V max
C29 (538.0MHz)230mDTG-82,000W
Channel icons
 FreeSports, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 71 Quest Red +1, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 88 Classic Hits, 235 Aljazeera English, plus 19 others

DTG-3 64QAM 8K 2/3 24.1Mb/s DVB-T MPEG2
DTG-6 256QAM 32KE 2/3 40.2Mb/s DVB-T2 MPEG4
DTG-8 64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)

Are you trying to watch these 0 Freeview HD channels?


The Hemel Hempstead (Hertfordshire, England) mast is not one of the extended Freeview HD (COM7 and COM8) transmitters, it does not provide these high definition (HD) channels: .

If you want to watch these HD channels, either use Freesat HD, or move your TV aerial must point to one of the 30 Full Freeview HD transmitters. For more information see the want to know which transmitters will carry extra Freeview HD? 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
B E TB E TB E TE TK T
C29ArqB
C31ArqA
C34_local
C37SDN
C40BBCA
C41ITVwavesITVwavesITVwavesD3+4
C42_local
C43D3+4
C44BBC2wavesBBC2wavesBBC2wavesBBCA
C46BBCB
C47C4wavesC4wavesC4wavesBBCB
C50tv_offSDN
C51tv_offBBC1wavesBBC1wavesBBC1waves
C55tv_offArqB
C59tv_offArqA

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

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.

Comments
Friday, 14 October 2011
Transmitter engineering
sentiment_very_satisfiedOwner

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]

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Transmitter engineering's 138,029 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

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 138,029 posts xx
Saturday, 15 October 2011
Briantist
sentiment_very_satisfiedOwner

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? | ukfree.tv - independent free digital TV advice for things to try.

link to this comment
Briantist's 38,844 posts GB
Monday, 17 October 2011
F
Fabian
10:42 AM
London

Hi,

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,
Fabian

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Fabian's 1 post GB
M
Mike Dimmick
sentiment_very_satisfiedPlatinum

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.

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Mike Dimmick's 2,486 posts GB
K
Keith
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
Thursday, 20 October 2011
Friday, 21 October 2011
N
Norman
2:47 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 4 posts GB
Briantist
sentiment_very_satisfiedOwner

2:53 PM

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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Briantist's 38,844 posts GB
Tuesday, 1 November 2011
Transmitter engineering
sentiment_very_satisfiedOwner

3:51 PM

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

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Transmitter engineering's 138,029 posts xx
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