All posts by KMJ, Derby
Below are all of KMJ, Derby's postings, with the most recent are at the bottom of the page.
Mike Fisher: The Bromsgrove frequencies are 23,26,29,33,34.This lasts until 28th September 2011 when the post DSO frequencies are adopted for the COM muxes.
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Christopher Sharpe: As you say Tacolneston offers better reception according to the Digital UK postcode checker.Note though MuxD is currently shown as poor reception and then becomes zero in July.After switchover on the 23rd November 2011 Tacolneston offers good reception on all muxes. Regarding the switchover at Sudbury it is only the PSB muxes that switch to high power in July. You will gain an HD service but reception of Mux D/MuxArqB could get worse as the mode changes to 8k to carry Sky Sports.The COM muxes at Sudbury do not change to high power working until 2012.
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Sharon:It sounds like you have stored the channels from MuxB on C33 from Waltham. Is there a BBC4 or duplicate radio channels in the 800s?
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Pete Hammond: The Digital UK postcode checker does not show any reception for Mendip at your location. However you should be able to receive a full service from Rowridge. Use a group A receiving aerial set for horizontal polarisation. Switchover takes place on 7th and 21st March 2011. Winterbourne Steepleton will offer the 3 PSB muxes only. A full Freeview service will be available from Rowridge with the COM muxes switching to high power working on 18th April 2012.Also on this date all six muxes will additionally be transmitted with vertical polarisation which is expected to give better reception at your location.
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Donna: Check for equipment causing intermittent interference such as a boiler with a faulty thermostat or loose connections on devices only in use in the evening.
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Raf:According to the Digital UK postcode checker you are in an area of good reception for Crystal Palace. After switchover signals will be 200kW, ten times stronger than at present. The HD mux will be twenty times stronger. You should have no difficulty at all after switchover unless you increase the signal strength now to such a level that you end up with too much signal when the 200kW transmitters enter service. It is possible that your HD reception at present is receiving interference from Reigate.Your tv possibly requires a slightly stronger signal than the HD recorder to work properly.If you do replace the aerial a group A type yagi, carefully aligned should be all you need. Of course cables and connectors should be checked first for damage/poor contact.You mentioned signal quality being poor on the tv. What is the quality like on the HD recorder? Does connecting the aerial direct to the tv make a difference?
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Caroline: It sounds like your aerial is pointing at Waltham, in which case the rods should be horizontal. There are four transmitters offering reasonably strong signals on BBC channels; Kimberley on C27, Belmont on C30,Sutton Coldfield on C41+ and Waltham on C49. Check the 800s in your channel list to see if there is a duplicate set of channels that work.(You will find the alternative signals first when scanning which would cause the Waltham set to be put in the 800s) If there are none at all try a manual tune on C49.If there is still no signal try different positions around the loft for the aerial.Failing that pointing the aerial at Belmont at 57degrees and rescanning might give all muxes but you would not of course receive East Midlands news.
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alan kirby: An "HD ready" tv simply means it is able to display an HD picture when it is fed via an HDMI cable with a suitable HD source such as a Blue-ray player, Sky or Freesat HD box or a Freeview HD box.Receivers for Freeview HD must be able to support DVB-T2.
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Caroline: It does cause a lot of confusion! The channel numbers I mentioned above refer to the UHF channel/frequency that the multiplex is transmitted on. The channels in your channel list are what you select on the remote to view the tv station. When scanning these are entered into logical channel number (LCN) slots, eg BBC1=1 ITV1=3 QVC=16 etc.When a regional variation is found and the LCN slot is already occupied the duplicate is usually placed in the 800s; so if BBC1 North was already in position 1 and BBC1 East Mids was then found it could appear as 801 in the channel list. Loft aerials are not ideal for Freeview reception because of signal being lost when travelling through the roofing materials and usually aerials receive stronger signals when they are higher up.However as you have been able to receive all the other multiplexes I would have expected it to be possible to find Mux1. As tv signals on different frequencies do not always appear in exactly the same position it is sometimes necessary to locate the aerial in a compromise position.This is why moving the aerial about a bit (raising/lowering or a short distance to either side) can find a missing signal.
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Monday 2 May 2011 1:37PM
M. Irvin: If you are using The Wrekin transmitter MuxD/MuxArqB changed frequency to C53 in 8k mode but remained at low power. if you were able to receive MuxC prior to 20th April it is unlikely to be interference as the two muxes swapped frequency on this date. This was to avoid possible co-channel interference to MuxArqB from Lark Stoke. Yes the problem was moved to MuxArqA but the priority was given to Sky Sports subscribers.It is possible that the mode change reduced the signal strength just enough for you to lose signal. It is also possible that you are finding a weak signal from Moel Y Parc on C48 which is predicted as giving good reception on MuxArqB at your location with a suitable aerial. Try a manual tune on C53 after first clearing the channel list with a factory reset.Also check cables and connectors are all in good order.