Forum › Forums › Freeview HD › HDR 1800T, 2000T › HDR-2000t COM7 MUX problem
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Martin Liddle.
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December 11, 2018 at 10:17 am #61272
Anonymous
InactiveThe manual tuning information on the response page is not relevant, it is for HD and as my experience showed, the method does not work.
I agree that the ‘bucket’ contained channel 34 with ITV but surely the object of manual tuning is to over-ride the stored channel and replace it with the results of the search. If not, maybe you could explain what manual tuning is for as it escapes me?
December 11, 2018 at 11:12 am #61273Martin Liddle
ParticipantNeilD – 50 minutes ago »
The manual tuning information on the response page is not relevant, it is for HD and as my experience showed, the method does not work.
If by “response page” you mean the manual tuning FAQ it certainly does work and I have used it myself many times. Did you actually follow the full instructions?
If not, maybe you could explain what manual tuning is for as it escapes me?
The idea is to first delete all the stored multiplexes and then tune to a consistent set of multiplexes from a single transmitter which will give the best signal quality and eliminate the accurate recording problems that occur when receiving from more than one transmitter.
October 13, 2019 at 7:33 pm #61274Anonymous
InactiveHi All. Problem I reported in the first post which started this thread in April 2015 seems to have returned. Basically I’ve been getting intermittent reception of the COM7 MUX on my HUMAX HDR-2000t for the past month or so. Today is classic example in which I got all the HD channels during the morning but on going to record something in the evening found the COM7 channels have disappeared. TV picks them up fine. Annoying and very frustrating. Any remedies? I’m in the Reading area, RG1 postcode. Many thanks.
October 13, 2019 at 8:36 pm #61275grahamlthompson
ParticipantScott McC – 50 mins ago »
Hi All. Problem I reported in the first post which started this thread in April 2015 seems to have returned. Basically I’ve been getting intermittent reception of the COM7 MUX on my HUMAX HDR-2000t for the past month or so. Today is classic example in which I got all the HD channels during the morning but on going to record something in the evening found the COM7 channels have disappeared. TV picks them up fine. Annoying and very frustrating. Any remedies? I’m in the Reading area, RG1 postcode. Many thanks.
RG1 is not enough info to diagnose what the problem might be.
Enter your postcode here and your house number and tick the detailed view,
Post a screen grab of the preferred transmitter reception,
http://www.digitaluk.co.uk/operations/about_the_coverage_checker
You may have issues from the 800MHz clearance and the conversion of COM7 to a single frequency network and your location is in a area where the the two adjacent transmitters interfere or your existing aerial can no longer receive the frequency COM 7 and COM 8 now use. If so you may be able for free support to resolve the issue.
Without more detailed info all this is pure speculation.
October 15, 2019 at 9:41 pm #61276Anonymous
InactiveHi Graham. Thanks for your reply. I have attached a screen grab of the information obtained at the link you provided. My postcode is RG1 6LU with the transmitter being Hannington. Bizarrely and quite by accident I have discovered that if I leave the Humax on any of the COM7 channels I'm not receiving, then after a period of typically 6-7 minutes, the Humax detects the frequency and all the COM7 channels appear. I've been able to do this for the last 4 evenings in a row although tonight, when I switched to another channel that was not in the COM7 group, I found that I had lost the COM7 channels again when I went back.
All very strange, and reminiscent of the problem I reported over 4 years ago. Having had stable reception of COM7 up until the last month or so I thought the problem had long disappeared but apparently it's back. Thanks again.
[attachment=74348,1275]
October 16, 2019 at 9:46 am #61277Anonymous
InactiveWhat you describe sounds very similar to a problem I have with COM8. If I manually retune the multiplex my Humax 2000T often returns no channels. I have to keep trying to get the channels back. On average it can take three attempts. Once the multiplex is tuned in then changing from (for example) BBC1 (SD) to BBC News HD (on COM8) I often get a message informing me that the channel isn’t available (can’t remember the exact message – and I can’t get the Humax to do it just now). After a few seconds (perhaps as much as 20s) the channel is displayed. It seems to me that the 2000T can’t handle single frequency networks (SFN) very well. No problems with a TV set.
Have any of the transmitters near Hannington switched the UHF frequency of COM7 to join the SFN on UHF 55? If so, grahamlthompson’s explanation may be correct.
October 16, 2019 at 9:39 pm #61278Anonymous
InactiveHi Phil. Thanks for the reply. When the Humax is not receiving the HD channels on COM7 the following message is displayed: “The receiver is not receiving a signal or the signal is too weak”. As you suggest, I suspect something must have changed at Hannington recently, as this problem has only resurfaced in the last month or so. I would also add that I haven’t had any issues at any stage with the HD channels on COM8. Only COM7 has the issue.
October 17, 2019 at 9:24 am #61279Anonymous
InactiveI only mention COM8 because that is the problem I have. Here on the Waltham transmitter only COM8 has moved to SFN. The message you quote is the message I meant. Why you only have a problem with COM7 and not COM8 when both are on SFNs at Hannington, I don’t know.
October 17, 2019 at 9:25 am #61280Anonymous
InactiveHaving just retuned my HDR 2000T using autotuning I found the HD channels were no longer available plus a number of others on the same mux despite them all being present previously and present on my Samsung TV after autotuning it.
The solution was to do a manual tune installation, go to the channel number for the mux (in my case 36 using the Dover transmitter) which showed no signal but then to toggle down to network and change the setting from DVB T to DVB T2 – after a few seconds the box found all the missing channels.
There was a clue that this mux differed on the channel listing page as this mux was DTG 6 mode whilst the others were DTG 3 & 8.
I also noted that the Samsung autotuning went through the channel range twice in succession. I thought this odd at the time but now assume it was once with DVB T, once with DVB T2. The Humax box only went through the channel range once.
October 17, 2019 at 10:32 pm #61281Anonymous
InactiveHi Neil. Thanks for your response. First of all profuse apologies. I have been extremely careless and on paying closer attention to the Hannington transmission frequencies have noted that my problems are not to do with COM 7 or 8 but instead the PSB3 MUX. I've attached a screen grab but essentially I have lost 8 broadcast stations including the HD versions of BBC1, BBC2, ITV, Channel 4 and Channel 5.
I tried a manual re-tune on channel 39 (618.2MHz) but the signal strength was zero for DVB-T2 and also DVB-T. Like you my Samsung TV has no issues and all these channels are available. It would be great to get these channels back so I'm currently a little peeved that they have gone. Thanks again for your response.
[attachment=74375,1276]
October 18, 2019 at 3:03 pm #61282Anonymous
InactiveI understand your frustration BUT as the Samsung TV has the channels from PSB3 mux they will also be available for your HDR 2000T to find.
I also have two Samsung TVs which both find the HD channels by searching the frequency band twice, I assume with with DVB t & DVB T2.
But, frustratingly, the Samsung TV does not let me find out which mux it has found the HD channels on. I used Google searches to find the mux channel/frequency and found many pages were out of date for the Dover transmitter. The one I found reliable for Dover (https://ukfree.tv/transmitters/tv/Hannington) has the HD channels on PS3B at channel 36 as per your screen grab so I think should be correct.
The procedure that worked for me is, on any TV channel, press Menu /Settings/ enter the Manual tune option, choosing channel 36 (right arrow to get the list of channel numbers, toggle to 36, press OK to get it), select Network toggle to DVB T2, press Ok then press Search. I found it could take about 10 seconds to tune to the channel so patience is required.
If that still does not work I suggest you use the same procedure and look at channels in the general range of the Hannington mux, if necessary working your way through them all!
Good luck
October 18, 2019 at 6:22 pm #61283Anonymous
InactiveHi Neil. Thanks for coming back. I tried your manual tuning procedure earlier this morning and noticed a difference immediately. Specifically, on going to channel 39 (PSB3 MUX at Hannington), after a few seconds the “signal strength” and “quality” indicator bars sprang to life and after 3-4 attempts to “search” for stations, it finally locked on and I now have all the stations in the PSB3 MUX back in my EPG and currently I’m able to view them again.
Using same procedure yesterday, the “signal strength” and “quality” indicator bars showed no signal at all.
I wonder if its weather related? Today it was a bright sunny morning here in Reading, in contrast to yesterday which was wall-to-wall cloud and very heavy rain showers.
Thanks again
October 19, 2019 at 9:18 am #61284Anonymous
InactiveGlad to hear you have finally got all the channels.
I wait to see if my HDR 2000T will continue to fail to record when we are away now that it only has the Dover transmitter mux rather than the mix of Bluebell Hill and Dover mux it previously insisted on registering.
October 19, 2019 at 6:12 pm #61285Anonymous
InactiveHi Neil. Hope everything works out for you. PSB3 channels down again for me this evening. Can’t seem to find a solution. Very variable and I suspect it’s fluctuations in signal strength, that the Humax struggles with.
October 19, 2019 at 10:35 pm #61286Anonymous
InactiveOne thing to note. Once you have PSB3 successfully tuned, DO NOT retune if you loose it. It is very unlikely to ‘come back’ and will be deleted from your tuning database and you will just have to retune yet again when conditions (or whatever) improves. If you don’t retune, they will just come back.
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