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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 (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 ITV +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 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
Wednesday, 18 April 2012
Transmitter engineering
sentiment_very_satisfiedOwner

4:29 AM

HEMEL HEMPSTEAD transmitter - Freeview BBC Digital TV Off Air; DSO related from 00:22 today [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

7:28 AM

HEMEL HEMPSTEAD transmitter - Freeview BBC Digital TV Off Air; DSO related from 00:22 today to 01:05 today [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

7:28 AM

HEMEL HEMPSTEAD transmitter - Freeview BBC Digital TV Off Air; DSO related from 00:22 today to 01:05 today [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
E
Esther
12:23 PM

Hi, i have an Alba tv with built in freeview.I have lost all channels the the TV will not accept the menu button to retune.I then bought an all in one remote,wich wont even turn the tv on!! What should i do ?

link to this comment
Esther's 1 post GB
J
jb38
sentiment_very_satisfiedPlatinum

1:17 PM

Esther: As far as what to do is concerned, it would be of assistance for anyone offering advice to have knowledge of your location, (pref: post code or one from nearby) as the signal levels expected in you area could then be assessed as its possible that you might be receiving a signal thats excessively powerful, and that alone can block reception.

link to this comment
jb38's 7,179 posts GB
B
Bernard Hatt
11:29 PM
Hemel Hempstead

Just been rescanning/retuning my Freeview receiver attached to a Linux computer, and everything works fine apart from COM4/SDN and COM5/ArqA.

Both are shown on your listing with the FEC value of 2/3, but I can only tune in to scan with the value of 3/4.

Not sure if it's a problem with your listing or my software, but I thought I'd mention it in case anyone else has a similar problem.

link to this comment
Bernard Hatt's 2 posts GB
Thursday, 19 April 2012
Transmitter engineering
sentiment_very_satisfiedOwner

10:30 AM

HEMEL HEMPSTEAD transmitter - Freeview BBC Digital TV Off Air; DSO related from 00:22 yesterday to 01:05 yesterday [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
Transmitter engineering
sentiment_very_satisfiedOwner

10:30 AM

HEMEL HEMPSTEAD transmitter - Freeview BBC Digital TV Off Air; DSO related from 00:22 yesterday to 01:05 yesterday [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
J
James
2:31 PM
Berkhamsted

Hi all. I also retuned yesterday (in Berkhamsted, using the Hemel Hempstead transmitter) but dissapointed to find that COM5 and COM6 are completely unwatchable and breaking up on all my TV's (eg. Pick TV on COM5 and Yesterday COM6).

Prior to DSO, all channels on all muxes were working fine.

Does anyone know what could be causing this? Could it be something in my setup that DSO dislikes or, is there still work going on at the Hemel transmitter perhaps? I notice that there is still the "roadworks" symbol on map above. Please can anyone else using the Hemel Hempstead transmitter confirm if they're getting the same problem?

Thanks a lot,
James.

link to this comment
James's 1 post GB
Friday, 20 April 2012
Transmitter engineering
sentiment_very_satisfiedOwner

4:29 AM

HEMEL HEMPSTEAD transmitter - Freeview BBC Digital TV Off Air; DSO related from 00:22 on 18 Apr to 01:05 on 18 Apr [BBC]

link to this comment
Transmitter engineering's 138,029 posts xx
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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.

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