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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, 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 (SD), 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 London ads, 18 More4, 24 ITV4, 33 ITV +1 (London),

PSB3
BBCB
 V max
C46 (674.0MHz)214mDTG-62,000W
Channel icons
74 Shopping Quarter , 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, 204 CBBC HD, plus 1 others

COM4
SDN
 V max
C37 (602.0MHz)214mDTG-82,000W
Channel icons
12 Quest, 20 Drama, 21 5USA, 27 ITV2 +1, 30 5STAR, 31 Paramount Network, 34 ITV3 +1, 40 Sony Movies Action, 44 Channel 5 +1, 54 5SELECT, 58 ITVBe +1, 59 ITV4 +1, 63 Blaze, 66 CBS Reality, 70 Horror Channel, 77 TCC, 80 Blaze +1, 203 CITV, 211 Ketchup TV, plus 17 others

COM5
ArqA
 V max
C31 (554.0MHz)230mDTG-82,000W
Channel icons
11 pick, 17 Really, 19 Dave, 23 CCXTV, 28 E4 +1, 29 4Music, 38 Quest Red, 41 Food Network, 45 Film4 +1, 46 Challenge, 47 4seven, 57 Smithsonian Channel, 75 Yesterday +1, 76 Quest +1, 78 Now 70s, 88 Together TV, 233 Sky News, plus 8 others

COM6
ArqB
 V max
C29 (538.0MHz)230mDTG-82,000W
Channel icons
25 Yesterday, 32 Sony Movies, 37 DMAX, 39 CBS Justice, 42 HGTV, 67 CBS Drama, 79 Dave ja vu, 81 Talking Pictures TV, 91 PBS America, 234 RT, 235 Aljazeera English, plus 18 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 12 Freeview HD channels?

the effected 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: BBC Four HD, BBC News HD, CBeebies HD, Forces TV, FreeSports, More4 +1, NOW 80s, PBS America +1, Pick +1, Together TV +1, Quest Red +1, RT HD.

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?

1984-971997-981998-20122012-132013-182013-1718 Apr 2018
B E TB E TEE TE TE TK T
C29ArqB
C31ArqA
C34_local
C37SDN
C40BBCA
C41ITVwavesITVwavesITVwavesD3+4D3+4D3+4
C42_local_local_local
C43D3+4
C44BBC2wavesBBC2wavesBBC2wavesBBCABBCABBCA
C46BBCB
C47C4wavesC4wavesC4wavesBBCBBBCBBBCB
C48+1
C50tv_offSDNSDNSDN
C51tv_offBBC1wavesBBC1wavesBBC1waves
C55tv_off2ArqBArqBArqB
C59tv_off-BArqAArqAArqA
C60tv_off+A
C62C
C65D

tv_off Being removed from Freeview (for 5G use) after November 2020 - 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, 1 January 2020
Transmitter engineering
sentiment_very_satisfiedOwner

2:03 AM

HEMEL HEMPSTEAD transmitter - DAB: BBC National DAB Radio Weak Signal from 10:32 on 11 Oct to 12:09 on 11 Oct. [BBC]

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Transmitter engineering's 130,696 posts xx
Tuesday, 11 February 2020
Transmitter engineering
sentiment_very_satisfiedOwner

4:28 PM

HEMEL HEMPSTEAD transmitter - DAB: Off the air due to a fault from 11 Feb 12:04 until 11 Feb 15:19. . [BBC]

link to this comment
Transmitter engineering's 130,696 posts xx
Thursday, 13 February 2020
Transmitter engineering
sentiment_very_satisfiedOwner

10:29 AM

HEMEL HEMPSTEAD transmitter - DAB: Off the air due to a fault from 11 Feb 15:51 until 11 Feb 17:44. Off the air due to a fault from 11 Feb 12:04 until 11 Feb 15:19. . FM: Off the air due to a fault from 11 Feb 15:51 until 11 Feb 17:44. Broadcasting in mono due to a fault from 11 F [BBC]

link to this comment
Transmitter engineering's 130,696 posts xx
Wednesday, 10 June 2020
Transmitter engineering
sentiment_very_satisfiedOwner

1:28 PM

HEMEL HEMPSTEAD transmitter - DAB: Slightly reduced power due to essential engineering from 24 Jul 10:22 until 24 Jul 15:51. Slightly reduced power due to essential engineering from 23 Jul 10:08 until 23 Jul 10:09. . [BBC]

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Transmitter engineering's 130,696 posts xx
Thursday, 18 June 2020
M
MBNA
10:47 AM

i am not receiving any signals from free view hemel hepstead trasmitter thankyou

link to this comment
MBNA's 1 post GB
C
Chris.SE
sentiment_satisfiedGold

5:58 PM

MBNA:

Neither Freeview nor the BBC are currently reporting any problems with the Hemel Hempstead relay (6 muxes) nor is it listed for Planned Engineering.
Have you got your signals back now? If you retuned when there was no signal it will have cleared all correct tuning and you'll need to repeat a retune when there is signal.

If you still have no signal, then check all you coax plugs, connections, flyleads etc, unplug connectors check for corrosion or other problems and reconnect them. Flyleads can be a common problem, try swapping them. See what signal strengths (if any) and quality you are getting for the multiplexes shown in your TV's tuning section, this might indicate potential issues with your aerial or downlead. Also check that your downlead looks undamaged and that your aerial seems intact and pointing in the correct direction.
Problematic connections, water ingress etc. can seem to affect reception of just an individual or several multiplexes.

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Chris.SE's 1,432 posts GB
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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.

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.

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