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Full Freeview on the Plympton (Plymouth, England) transmitter

first published this on - UK Free TV
sa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps50.381,-4.068 or 50°22'52"N 4°4'3"Wsa_postcodePL7 1TT

 

The symbol shows the location of the Plympton (Plymouth, England) transmitter which serves 35,000 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 Plympton (Plymouth, England) mast?

Plympton transmitter - Plympton transmitter: Possible effect on TV reception week commencing 15/04/2024 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 Plympton 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)163mDTG-400W
Channel icons
1 BBC One (SD) South West, 2 BBC Two England, 9 BBC Four, 23 BBC Three, 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, plus 17 others

PSB2
D3+4
 V max
C42 (642.0MHz)163mDTG-400W
Channel icons
3 ITV 1 (SD) (West Country), 4 Channel 4 (SD) South ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 South ads, 18 More4, 26 ITV4, 28 ITVBe, 30 E4 +1, 35 ITV1 +1 (West Country),

PSB3
BBCB
 V max
C45 (666.0MHz)163mDTG-400W
Channel icons
46 5SELECT, 101 BBC One HD South West, 102 BBC Two HD England, 103 ITV 1 HD (ITV Meridian Southampton), 104 Channel 4 HD South ads, 105 Channel 5 HD, 106 BBC Four HD, 107 BBC Three HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 V max
C41 (634.0MHz)163mDTG-8400W
Channel icons
20 Drama, 21 5USA, 29 ITV2 +1, 32 5STAR, 33 5Action, 38 Channel 5 +1, 41 Legend, 42 GREAT! action, 57 Dave ja vu, 58 ITVBe +1, 59 ITV3 +1, 64 Blaze, 67 TRUE CRIME, 68 TRUE CRIME XTRA, 78 TCC, 81 Blaze +1, 83 Together TV, 89 ITV4 +1, 91 WildEarth, 209 Ketchup TV, 210 Ketchup Too, 211 YAAAS!, 267 Al Jazeera English, plus 30 others

COM5
ArqA
 V max
C44 (658.0MHz)163mDTG-8400W
Channel icons
11 Sky Mix, 17 Really, 19 Dave, 31 E4 Extra, 36 Sky Arts, 40 Quest Red, 43 Food Network, 47 Film4 +1, 48 Challenge, 49 4seven, 60 Drama +1, 65 That's TV 2, 70 Quest +1, 74 Yesterday +1, 75 That's 90s, 233 Sky News, plus 11 others

COM6
ArqB
 V max
C47 (682.0MHz)163mDTG-8400W
Channel icons
12 Quest, 25 W, 27 Yesterday, 34 GREAT! movies, 39 DMAX, 44 HGTV, 52 GREAT! romance, 56 That's TV (UK), 61 GREAT! movies extra, 63 GREAT! romance mix, 71 That’s 60s, 73 HobbyMaker, 82 Talking Pictures TV, 84 PBS America, 235 Al Jazeera Eng, plus 18 others

DTG-8 64QAM 8K 3/4 27.1Mb/s DVB-T MPEG2
H/V: aerial position (horizontal or vertical)

The Plympton (Plymouth, 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 Plympton transmitter?

regional news image
BBC Spotlight 0.8m homes 2.9%
from Plymouth PL3 5BD, 4km west (280°)
to BBC South West region - 107 masts.
regional news image
ITV West Country News (West) 0.8m homes 2.9%
from Plymouth PL7 5BQ, 3km east-northeast (76°)
to ITV West Country region - 107 masts.
All of lunch, weekend and 50% evening news is shared with West Country (East)

How will the Plympton (Plymouth, England) transmission frequencies change over time?

1984-971997-981998-20092009-132013-182013-1710 Apr 2019
C/D EWWWW TW TK T
C30C5wavesC5waves_local_local_local_local
C40BBCA
C41SDN
C42SDNSDNSDND3+4
C44ArqA
C45ArqAArqAArqABBCB
C47ArqB
C49tv_off D3+4D3+4
C54tv_offC4wavesC4wavesC4wavesBBCABBCABBCA
C56tv_offArqBArqBArqB
C58tv_offBBC1wavesBBC1wavesBBC1wavesBBCBBBCBBBCB
C61ITVwavesITVwavesITVwavesD3+4
C64BBC2wavesBBC2wavesBBC2waves

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 12 Aug 09 and 9 Sep 09.

How do the old analogue and currrent digital signal levels compare?

Analogue 1-5 2kW
SDN, ARQA, ARQB, BBCA, D3+4, BBCB(-7dB) 400W
Mux 1*, Mux 2*, Mux A*, Mux B*, Mux C*, Mux D*(-10dB) 200W

Which companies have run the Channel 3 services in the Caradon Hill transmitter area

Apr 1961-Dec 1981Westward Television
Jan 1982-Dec 1992Television South West (TSW)
Jan 1993-Feb 2004Westcountry Television
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. Plympton 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
Thursday, 21 March 2013
S
Stuart Williamson
8:01 PM
Saltash

Early last week we lost all the BBC channels on C54. I have 4 receivers all with the same problem (all other channels are good).

The diagnostic shows signal strength at 100% but 0 quality. (Plympton transmitter). I have tried retune but no channels found!

I called last week and was told there was maintenance on this transmitter (operating under reduced power)but the website now shows no problems.

In general we have had good reception since switchover to digital.

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Stuart Williamson's 2 posts GB flag
Stuart's: mapS's Freeview map terrainS's terrain plot wavesS's frequency data S's Freeview Detailed Coverage
Monday, 3 June 2013
Arun
2:53 PM
Stoke-on-trent

Hi,
I see that this transmitter is scheduled for an engineering period on June 5th, where "D3&4 moves from ch61 to ch49", as part of the c60/c61 clearance. I was wondering, would it be just a change of the channel/frequency or would the TSIDs (and other DVB identifiers) of the those channels change as well ? Could you please let me know as this peice of technical information would be quite useful for something i'm working on.

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Arun's 7 posts GB flag
Arun's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
Briantist
sentiment_very_satisfiedOwner

3:28 PM

Arun: there is no change to anything other than the frequency as far as I know with these changes. The NCND is used to notify equipment of the changes.

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Briantist's 38,915 posts GB flag
Arun
3:53 PM
Stoke-on-trent

Hi Brian, appreciate the quick response.
I was studying the effects on an STB when a re-tune is not done after a MAJOR NCD change.
However, I could not find enough technical information, especially about the the possible changes (and the current) DVB Identifiers across the UK, anywhere online.
I was not sure about the TSIDs' behaviour, but thanks a lot for providing me with the information.

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Arun's 7 posts GB flag
Arun's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
Briantist
sentiment_very_satisfiedOwner

3:56 PM

Arun: have you got the d book? DTG :: The D-Book

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Briantist's 38,915 posts GB flag
Arun
4:23 PM
Stoke-on-trent

Hi Brian. Yes.
The DBook indicates that the TSID of a multiplexer can or need not change, and in any case an invariant tsid can be included in the NCN descriptor.
My concern regarding these recent changes across the UK was that, while in theory, since the services are the same, and it's the same transmitter that is now broadcasting on a new frequency (no regional variants, indicating no change in TSID), a re-tune can be done to acquire the new frequencies.
However, I have no concrete data to indicate the same, i.e., the change is just an RF channel / frequency change.

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Arun's 7 posts GB flag
Arun's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
Briantist
sentiment_very_satisfiedOwner

5:25 PM

Arun: The current "clearance" changes involve no changes to the configuration of the service, just a change of frequency.

As I am sure you know, they are just a shuffle of allocations from C61 and C62 to C39 and C40 (see Digital
Dividend - changes to the 800MHz band | 4G-at-800 | ukfree.tv - 10 years of independent, free digital TV advice
).

From memory, all receivers should be able to cope with a frequency change directly because there is no change to anything else in the system. The receiver should reallocate the same service to the same LCN.

Most problems happen (and need a "factory reset") when a service changes the LCN or there is a slight change to the channel identifier (such as "ITV 1" becoming "ITV").



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Briantist's 38,915 posts GB flag
Tuesday, 4 June 2013
Arun
12:41 PM
Stoke-on-trent

Hi Brian,
Thanks so much for the information.
You have been extremely helpful and very informative.
The last comment clears my doubts regarding the service configuration changes.
Based on the NCND change type and the information above, I assume a re-tune would be pretty much necessary to acquire the new (relocated) frequencies (and basically to be able to play them).
Since the PSI information would be cross-carried in the other (static) mux, I think I can go forward with my study.

Your help is much appreciated.

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Arun's 7 posts GB flag
Arun's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
Wednesday, 14 August 2013
H
harold furzeman
10:05 PM
Plymouth

I have a roof freeview aerial which, has to been in line with Plympton and North Hill. It is set to vertical position. My problem is that out two tv receivers when auto tuned lock onto some channels with signal strength 10 and others 3. Result drop out and mainly on BBC1,BBC2.ITV1 and Five. Is there an aerial filter or I could enter manually except I can't find any frequencies?

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harold furzeman's 1 post GB flag
harold's: mapH's Freeview map terrainH's terrain plot wavesH's frequency data H's Freeview Detailed Coverage
Sunday, 15 September 2013
B
B Moreton
10:41 AM

I live in a poor reception area receiving from Plympton & recently re tuned my 2 tvs because intermittent reception + frequency changes in June. Before changing I could receive Sky news ok, but now cannot get it at all although all other freeview are excellent. On checking reception on my tv I see that I have signal strength 4 and signal Quality 1 for this particular channel/programme only. Why is this? I have a 91 element, 16db, 26db gain aerial with 12 volt signal amplifier. Recently checked & best reception site available.

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B Moreton's 1 post GB flag
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