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Full Freeview on the Knockmore (Moray, Scotland) transmitter

first published this on - UK Free TV
sa_streetviewGoogle Streetviewsa_gmapsGoogle mapsa_bingBing mapsa_gearthGoogle Earthsa_gps57.532,-3.136 or 57°31'56"N 3°8'8"Wsa_postcodeAB55 6XP

 

The symbol shows the location of the Knockmore (Moray, Scotland) transmitter which serves 31,000 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 Knockmore (Moray, Scotland) 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 Knockmore 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
 H max
C31 (554.0MHz)466mDTG-320,000W
Channel icons
1 BBC One (SD) Scotland, 2 BBC Two Scotland, 7 BBC Alba, 23 BBC Three, 24 BBC Four (Scotland SD), 201 CBBC, 202 CBeebies, 231 BBC News, 232 BBC Parliament, 250 BBC Red Button, plus 12 others

PSB2
D3+4
 H max
C37 (602.0MHz)466mDTG-320,000W
Channel icons
3 STV (SD) (STV North (Aberdeen micro region)), 4 Channel 4 (SD) Scotland ads, 5 Channel 5, 6 ITV 2, 10 ITV3, 13 E4, 14 Film4, 15 Channel 4 +1 Scotland ads, 18 More4, 26 ITV4, 30 E4 +1, 35 ITV1 +1 (STV Edinburgh), 35 STV+1 (STV Edinburgh),

PSB3
BBCB
 H max
C29 (538.0MHz)466mDTG-620,000W
Channel icons
56 5SELECT, 101 BBC One HD Scotland, 102 BBC Two HD (England), 103 ITV 1 HD (STV West), 103 STV HD (STV West), 104 Channel 4 HD Scotland ads, 105 Channel 5 HD, 106 BBC Four HD, 108 BBC Scotland HD, 204 CBBC HD, 205 CBeebies HD, plus 1 others

COM4
SDN
 H -3dB
C33 (570.0MHz)466mDTG-810,000W
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
 H -3dB
C36 (594.0MHz)466mDTG-810,000W
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
 H -3dB
C48- (689.8MHz)466mDTG-810,000W
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 Knockmore (Moray, Scotland) 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 Knockmore transmitter?

regional news image
BBC Reporting Scotland 2.4m homes 9.2%
from Glasgow G51 1DA, 199km south-southwest (203°)
to BBC Scotland region - 230 masts.
regional news image
STV News 0.4m homes 1.5%
from Aberdeen AB12 3QH, 77km southeast (126°)
to STV North (Aberdeen) region - 76 masts.

Are there any self-help relays?

BerriedaleActive deflector90 km NE Invernes,13 homes
CarronTransposer20 km S Elgin35 homes
Glascarnoch CActive deflector
LangwellActive deflector90 km NE Invernes3 homes
LochrosqueActive deflectorLochrosque Lodge 40km W Dingwall2 homes
Turriff C/pTransposerAberdeenshire1 homes 60 caravans

How will the Knockmore (Moray, Scotland) transmission frequencies change over time?

1984-971997-981998-20102010-132013-182013-1723 Aug 2017
A K TA K TA K TW TW TW TW T
C23ITVwavesITVwavesITVwavesD3+4D3+4D3+4
C26BBC2wavesBBC2wavesBBC2wavesBBCABBCABBCA
C29C4wavesC4wavesC4wavesBBCBBBCBBBCBBBCB
C31BBCA
C33BBC1wavesBBC1wavesBBC1wavesSDN
C36ArqA
C37D3+4
C48ArqB
C53tv_offSDNSDNSDN
C56tv_off_local_local_local_local
C57tv_offArqAArqAArqA
C60tv_off -ArqB-ArqB

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 8 Sep 10 and 22 Sep 10.

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

Analogue 1-4 100kW
BBCA, D3+4, BBCB(-7dB) 20kW
SDN, ARQA, ARQB(-10dB) 10kW
Mux 1*, Mux 2*, Mux A*, Mux B*, Mux C*, Mux D*(-20dB) 1000W

Which companies have run the Channel 3 services in the Knock More transmitter area

Sep 1961-Jun 1997Grampian Television
Jun 1997-Dec 2014STV plc
Feb 1983-Dec 1992TV-am•
Jan 1993-Sep 2010GMTV•
Sep 2010-Dec 2014ITV Daybreak•
• Breakfast ◊ Weekends ♦ Friday night and weekends † Weekdays only. Knockmore 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, 15 December 2011
Transmitter engineering
sentiment_very_satisfiedOwner

4:29 AM

KNOCKMORE transmitter - Freeview BBC Digital TV Weak Signal from 18:46 on 13 Dec to 19:05 on 13 Dec HD Digital TV Off Air from 18:46 on 13 Dec to 19:04 on 13 Dec [BBC]

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Transmitter engineering's 138,029 posts xx
Thursday, 29 December 2011
Transmitter engineering
sentiment_very_satisfiedOwner

10:27 AM

KNOCKMORE transmitter - Freeview BBC Digital TV Weak Signal from 11:02 on 25 Dec to 11:31 on 25 Dec HD Digital TV Off Air from 11:02 on 25 Dec to 11:11 on 25 Dec [BBC]

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Transmitter engineering's 138,029 posts xx
Thursday, 22 March 2012
J
John
7:12 PM

Hi

I have just purchased a Panasonic PVR with Freeview+. It set up fine with HD etc but is missing the COM 4,5 & 6 channels with the weaker signals. Strangely, my Panasonic TV'x inbuilt standard tuner receives these channels.

Why is Freeview+ not able to receive weaker channels when standard Freeview can?

Is there anything I can do to get these missing channels on Freeview+?

Thanks
AB554AL

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John's 3 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

7:58 PM

John: Different receivers work differently and some may be more sensitive to others. That is both sensitivity of signals and immunity to interference.

I would not read anything into "Freeview" and "Freeview+" as these are simply brand names associated with non-recording and recording devices.

Have you had your Group A aerial replaced with a wideband one (or a second Group C/D aerial fitted)? If you haven't had this done, then that will explain poor reception of the COMs. If you would like me to explain what this means, then let me know.

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Dave Lindsay's 5,724 posts GB
Friday, 23 March 2012
J
John
12:26 PM

Dave

Many thanks for your reply.

I originally had my aerial replaced so that I could receive Freeview, but I do not know what type it is.

Both my Panasonic TV & my cheapo Alba tuner receive these channels, but the Alba has a poor picture quality (ghosting & reds sometimes flashing blue).

The new Panasonic PVR has a very good picture reception, much better than the Alba, but the Alba gets the extra channels.

It seems that there are two anomalies here:

(i)I have two Panasonic tuners, one gets Com4-6 and one doesn't.

(ii) The Alba has worse picture quality but picks up COM4-6 whereas the new Panasonic tuner has great picture quality but doesn't get COM4-6.

I would like to use the new Panasonic PVR to replace the Alba, as it is better in several ways. Unfortunately, the channel I use most often is on COM6.

Any suggestions you have or things I could try would be greatly appreciated.

Best
John

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John's 3 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

7:50 PM

John: I would agree that there are two issues.

(i) Issues with reception:

I think that the issue won't be with your aerial as you have had it replaced as I expected you might need to have done.

Is this a new problem?

Where does your aerial system serve? Does it just go to one point, e.g. the lounge, or is it split and if it is split is this a powered booster/amplifier?

If there is more than one aerial point (i.e. it serves more than one room), try connecting it to another point and tuning in the Panasonic that doesn't pick up the COMs. If there is manual tuning, then use it. Channels are COM4/SDN=C53, COM5/ArqA=C57 and COM6/ArqB=C60.

I don't think that the issue will be to weak a (COMs) signal at your aerial. At 6 miles from the transmitter, you have clear line of sight (assuming no local obstruction).

I came across this picture of Balvenie Castle and the transmitter can clearly be seen on the horizon:

Panoramio - Photo of Balvenie Castle

The image can be clicked for a high resolution one and there is no doubt that it is the television transmitter.

There is a possibility to be mindful of that the signal level being too high with the clear line of sight to the transmitter. For this reason, amplifiers should be removed if possible, if only for test/fault finding purposes.

A set-top aerial is another way of testing, it providing a lower signal level (assuming that it's sited in a suitable place).

(ii) The picture issue from the Alba is likely to be an issue with the connection between it and the TV or a problem with the output connection on the box or input connection on the TV.

There are two commonly used formats that are connected using a scart lead:

1. Composite video: This uses one conductor (wire) to carry the video. By its very nature this means that all the picture is sent down one wire (and obviously split up as necessary, as it were, at the other end).

2. RGB: This stands for "red, green, blue" and this uses a separate wire for each colour. This provides a better quality picture than composite video because it keeps the colour components separate.


The fact that you are saying that one or more colours is lost intermittently suggests that this is using RGB and that the problem is an intermittent connection with one or more of the three conductors. Perhaps try another scart lead or try connecting it to another television.

It's usually the case that TVs that have more than one scart socket on have one that accepts RGB signals and this is usually Ext1 (or AV1). So if you remove the scart plug from Ext1 on the TV and plug it in to Ext2, it may appear to solve the problem, but you will probably have just connected it using composite video.

The ghosting you see if likely to be an issue with the scart lead.

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Dave Lindsay's 5,724 posts GB
Tuesday, 27 March 2012
J
John
8:12 PM

Many thanks for that Dave.

I can now get all of the stations. I resolved the problem by replacing the HDMI cable. Presumably the first was faulty.

link to this comment
John's 3 posts GB
Dave Lindsay
sentiment_very_satisfiedPlatinum

8:36 PM

John: Good to hear you got it sorted.

It was the HDMI lead; as simple as that!

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Dave Lindsay's 5,724 posts GB
Friday, 18 May 2012
Transmitter engineering
sentiment_very_satisfiedOwner

4:30 PM

KNOCKMORE transmitter - Over the next week Knockmore main transmitter: TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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

6:28 PM

KNOCKMORE transmitter - Freeview HD Digital TV Weak Signal from 12:55 today to 13:12 today [BBC] Over the next week Knockmore main transmitter: TV (digital) Liable to interruption, Radio (analogue) working normally, Radio (digital) working normally. [DUK]

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Transmitter engineering's 138,029 posts xx
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