All posts by js
Below are all of js's postings, with the most recent are at the bottom of the page.
Colin Hobbs: You are missing the com7 and com8 multiplexes. This page still shows these as on UHF channels 31 and 37 respectively but they have moved to UHF channels 55 and 56.
This change means a wideband aerial is now needed.
If you look at the top right of this page you will see an envelope icon, and next to it a link with the postcode of the Rowridge transmitter.
Clicking that link will take you to a coverage checker page where you can enter your own postcode by clicking "Change address" and see the predicted coverage for your location.
The message above yours from StevensOnln1 details how you might qualify for a free aerial.
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Chris.SE: All it takes to prove it is one example:
YourTV, Thu 24 May 20:00 - 21:00: Castle
Wrapped Up in Death: The death of a museum curator takes a bizarre turn when Castle and Beckett learn that he isn{'}t the first member of a recent archaeological expedition to die. (S2 Ep19)
Here, the apostrophe in -isn't- will be missing because, in the Freeview data, it is represented by invalid code 0x19.
Who knows how many Freeview devices are being crippled by this faulty data?
My attempt to inform duk was met with total ignorance.
All the Freeview EPG data is passed to a "central collator" so will not vary across the network.
Here is the same event, this time from DVBGuide's output file rather than my own:
DVBGuide - A DVB EPG capture utility:
DVBGuide - A DVB EPG capture utility
<programme channel="233a.5040.5ab0" start="20180524190000 +0000" stop="20180524200000 +0000">
<!--locator uri="dvb://233a.5040.5ab0;789b@2018-05-24T19:00:00Z/PT01H00M" -->
<!--crid type="0x32" uri="crid://www.YourTV.com/S4797936" -->
<!--crid type="0x31" uri="crid://www.YourTV.com/E3946096" -->
<title lang="en">Castle</title>
<desc lang="en">Wrapped Up in Death: The death of a museum curator takes a bizarre turn when Castle and Beckett learn that he isnt the first member of a recent archaeological expedition to die. (S2 Ep19)</desc>
<!--content id="0x30" user="0x00" -->
<category lang="en">Entertainment</category>
<language>en</language>
<!--component content="0x01" type="0x03" language="und" -->
<video>
<present>yes</present>
<aspect>16:9</aspect>
</video>
<!--component content="0x02" type="0x03" language="eng" -->
<audio>
<present>yes</present>
<stereo>stereo</stereo>
</audio>
</programme>
The author of DVBGuide probably thought he was covering all eventualities by wrapping the duff codes like this: .
If so, he was wrong, as the xmltv app refuses to open the file.
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Freesat Diffs:
Vintage TV has been disabled on Freesat - with the exception of SD boxes in Northern Ireland!
Comparing files List Freesat 17-05-2018 11 01.txt and List Freesat 17-05-2018 13 08.txt
************************ CHANGED ************************
SERVICE NAME TYPE EPGID SID TSID ONID FREQ.P ENC EIT PROVIDER BOUQUETS LCN
Bouquet Change
Vintage TV 1 23004 53515 2098 2 11597V 0 1 Freesat 111111111111 505
Vintage TV 1 23004 53515 2098 2 11597V 0 1 Freesat EEE1EEEEEEEE 505
************************ NEW ************************
SERVICE NAME TYPE EPGID SID TSID ONID FREQ.P ENC EIT PROVIDER BOUQUETS LCN
Test Radio 2 2 28012 10544 2315 59 11427H 0 0 Freesat 100010001000 1985
Test Radio 3 2 28013 10547 2315 59 11427H 0 0 Freesat 100010001000 1986
:
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Darren: From:
TR 029
DVB-T2 SINGLE FREQUENCY NETWORKS AND SPECTRUM
"Self-interference places the main constraint on the size of an SFN.
In broad terms an SFN will contain coverage holes if any two transmitters within it are separated by distances exceeding the guard interval (more exactly: the distance which the signal travels during the guard interval period).
Up to a limit, it is possible to overcome this interference and regain the coverage by increasing the signal's guard interval, or by improving its robustness.
However, doing either of these will reduce the network's throughput, and it becomes necessary to trade off coverage against throughput in order to find the most satisfactory combination of the two."
The guard interval in current use for com7 and com8 is 1/16, corresponding to a maximum distance between transmitters of 67.2 km.
According to the Digital UK data for your location, linked to below your post, the distance between Hannington and Crystal Palace appears to be 82.4 km.
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Chris.SE: Here is the same event, this time from DVBGuide's Freesat output file rather than Freeview:
<programme channel="2.840.d7e6" start="20180524190000 +0000" stop="20180524200000 +0000">
<!--locator uri="dvb://2.840.d7e6;789b@2018-05-24T19:00:00Z/PT01H00M" -->
<!--crid type="0x32" uri="crid://www.yourtv-uk.com/S4797936" -->
<!--crid type="0x31" uri="crid://www.yourtv-uk.com/E3946096" -->
<title lang="en">Castle</title>
<desc lang="en">Wrapped Up in Death: The death of a museum curator takes a bizarre turn when Castle and Beckett learn that he isn't the first member of a recent archaeological expedition to die. (S2 Ep19)</desc>
<!--content id="0x30" user="0x00" -->
<category lang="en">Entertainment</category>
<language>en</language>
<!--component content="0x01" type="0x03" language="und" -->
<video>
<present>yes</present>
<aspect>16:9</aspect>
</video>
<!--component content="0x02" type="0x03" language="eng" -->
<audio>
<present>yes</present>
<stereo>stereo</stereo>
</audio>
</programme>
The xmltv app loads DVBGuide's Freesat output file without complaint.
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Darren: What it means is the Crystal Palace signal has to be regarded as noise.
It would be possible to increase the guard interval to 1/8 - at the cost of about 2 Mbps.
That would enable transmitters up to 134.4 km apart to function as a SFN.
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Freesat Diffs:
112 UTV +1 is now avaiable to Freesat users in Northern Ireland.
E4 and Film4 + 1 have exchanged transponders on Freesat:
Comparing files List Freesat 22-05-2018 11 01.txt and List Freesat 22-05-2018 13 01.txt
************************ CHANGED ************************
SERVICE NAME TYPE EPGID SID TSID ONID FREQ.P ENC EIT PROVIDER BOUQUETS LCN
Bouquet Change
UTV +1 1 01041 10231 2054 2 10906V 0 1 Freesat 100E100E100E 112
UTV +1 1 01041 10231 2054 2 10906V 0 1 Freesat 000100010001 112
Service ID Change, Transponder Move
E4 1 01510 8305 2042 2 10729V 0 1 Freesat 111111111111 122
E4 1 01510 9241 2041 2 10714H 0 1 Freesat 111111111111 122
Service ID Change, Transponder Move
Film4 + 1 1 01521 9225 2041 2 10714H 0 1 Freesat 111111111111 301
Film4 + 1 1 01521 8341 2042 2 10729V 0 1 Freesat 111111111111 301
Video Bitrate (Mbps) sampled at 34 <= dPCR <= 36 ms intervals over 15 seconds for 10714.00 H 22000 5/6 DVB-S QPSK (22/05/2018 13:21:11)
maximum | minimum | average | service_name
05.517 | 01.277 | 02.395 | 4Music
04.565 | 01.195 | 02.566 | Channel 4 (9211)/c4 l
04.069 | 01.352 | 02.502 | Channel 4 (9212)
04.019 | 01.280 | 02.436 | Channel 4 (9213)
03.740 | 01.352 | 02.356 | Channel 4 (9214)
03.914 | 01.321 | 02.370 | Channel 4 (9215)
04.456 | 01.301 | 02.412 | Channel 4 (9216)
06.022 | 01.670 | 03.542 | Film4
02.809 | 01.274 | 01.737 | Film4+1
02.740 | 00.979 | 01.913 | More4+1
03.448 | 01.170 | 02.101 | 9241 (Freesat E4)
03.228 | 00.821 | 02.095 | Null Packets
06.611 | 04.213 | 05.367 | All Other Streams
33.791 | 33.791 | 33.791 | TS Bitrate
Video Bitrate (Mbps) sampled at 34 <= dPCR <= 37 ms intervals over 15 seconds for 10729.00 V 22000 5/6 DVB-S QPSK (22/05/2018 13:21:30)
maximum | minimum | average | service_name
03.076 | 01.288 | 02.081 | E4/e4
03.251 | 01.717 | 02.159 | Film4 [ENC]
05.696 | 01.765 | 02.579 | Channel 4+1 (8311)
04.943 | 01.733 | 02.528 | Channel 4+1 (8312)
04.171 | 01.632 | 02.501 | Channel 4+1 (8313)
03.951 | 01.503 | 02.513 | Channel 4+1 (8314)
04.139 | 01.593 | 02.526 | Channel 4+1 (8315)
04.964 | 01.469 | 02.551 | Channel 4+1 (8316)
05.101 | 01.572 | 02.357 | E4+1
03.199 | 01.222 | 02.229 | 8341 (Freesat Film4 + 1)
05.589 | 00.845 | 02.305 | More4
03.165 | 00.844 | 02.087 | Null Packets
06.665 | 04.315 | 05.375 | All Other Streams
33.791 | 33.791 | 33.791 | TS Bitrate
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ASTRA/BSkyB Diffs:
UTV+1 was added to BSkyB 203 on Monday for users in Northern Ireland:
Comparing files List ASTRA 21-05-2018 11 01.txt and List ASTRA 21-05-2018 13 01.txt
************************ CHANGED ************************
SERVICE NAME TYPE EPGID SID TSID ONID FREQ.P ENC EIT PROVIDER BOUQUETS LCN
Renamed, Bouquet Change, LCN Change
10231 1 1090 10231 2054 2 10906V 0 1 BSkyB 000000000000010 1016
UTV+1 1 1090 10231 2054 2 10906V 0 1 BSkyB 000010001000100 203
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ASTRA/BSkyB Diffs:
E4 and Film4+1 have exchanged transponders on ASTRA/BSkyB:
Comparing files List ASTRA 23-05-2018 18 01.txt and List ASTRA 24-05-2018 11 01.txt
************************ CHANGED ************************
SERVICE NAME TYPE EPGID SID TSID ONID FREQ.P ENC EIT PROVIDER BOUQUETS LCN
Service ID Change
8341 1 1042 8341 2042 2 10729V 0 1 BSkyB 000000000000010 1003
8341 1 1042 9225 2042 2 10729V 0 1 BSkyB 000000000000010 1003
Renamed, EPGID Change, Bouquet Change, LCN Change
8341 1 1042 8341 2042 2 10729V 0 1 BSkyB 000000000000010 1003
Film4+1 1 1629 8341 2042 2 10729V 0 1 BSkyB 111111111111111 314
Service ID Change
9241 1 1067 9241 2041 2 10714H 0 1 BSkyB 000000000000010 1019
9241 1 1067 8305 2041 2 10714H 0 1 BSkyB 000000000000010 1019
Renamed, EPGID Change, Bouquet Change, LCN Change
9241 1 1067 9241 2041 2 10714H 0 1 BSkyB 000000000000010 1019
E4 1 1628 9241 2041 2 10714H 0 1 BSkyB 111111111111111 135, 829
Service ID Change, Transponder Move
E4 1 1628 8305 2042 2 10729V 0 1 BSkyB 111111111111111 135, 829
E4 1 1628 9241 2041 2 10714H 0 1 BSkyB 111111111111111 135, 829
Service ID Change, Transponder Move
Film4+1 1 1629 9225 2041 2 10714H 0 1 BSkyB 111111111111111 314
Film4+1 1 1629 8341 2042 2 10729V 0 1 BSkyB 111111111111111 314
We are back to ten video streams on each:
Video Bitrate (Mbps) sampled at 34 <= dPCR <= 36 ms intervals over 15 seconds for 10714.00 H 22000 5/6 DVB-S QPSK (24/05/2018 11:32:56)
maximum | minimum | average | service_name
06.237 | 01.769 | 04.764 | 4Music
06.195 | 01.097 | 01.715 | Channel 4 (9211)/c4 l
03.839 | 01.116 | 01.538 | Channel 4 (9212)
03.779 | 01.116 | 01.530 | Channel 4 (9213)
03.812 | 01.116 | 01.542 | Channel 4 (9214)
03.697 | 01.115 | 01.551 | Channel 4 (9215)
05.805 | 01.115 | 01.612 | Channel 4 (9216)
04.374 | 01.595 | 02.867 | Film4
03.711 | 00.817 | 01.889 | More4+1
06.202 | 02.207 | 03.853 | E4
09.177 | 03.793 | 05.781 | Null Packets
06.093 | 04.213 | 05.148 | All Other Streams
33.791 | 33.791 | 33.791 | TS Bitrate
Video Bitrate (Mbps) sampled at 34 <= dPCR <= 36 ms intervals over 15 seconds for 10729.00 V 22000 5/6 DVB-S QPSK (24/05/2018 11:33:23)
maximum | minimum | average | service_name
01.949 | 01.192 | 01.551 | Film4 [ENC]
05.381 | 02.230 | 03.066 | Channel 4+1 (8311)
06.199 | 02.212 | 03.075 | Channel 4+1 (8312)
06.093 | 02.077 | 03.091 | Channel 4+1 (8313)
05.682 | 02.044 | 03.044 | Channel 4+1 (8314)
04.785 | 01.722 | 02.990 | Channel 4+1 (8315)
05.425 | 01.112 | 02.966 | Channel 4+1 (8316)
01.945 | 01.027 | 01.338 | E4+1
02.487 | 00.681 | 01.392 | Film4+1
03.607 | 00.901 | 01.848 | More4
05.311 | 03.021 | 04.354 | Null Packets
05.912 | 04.181 | 05.076 | All Other Streams
33.791 | 33.791 | 33.791 | TS Bitrate
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Wednesday 9 May 2018 11:26AM
A G Hearn: ARQ A is on UHF channel 33 from Mendip. see:
Coverage Checker - Detailed View