All posts by KMJ, Derby
Below are all of KMJ, Derby's postings, with the most recent are at the bottom of the page.
Amy: Indoor aerials are very hit and miss for Freeview reception. You are in a reasonably strong signal area but you would still have to find a position in the room where there is any signal. Close to a window which faces the direction of the transmitter is usually favourite. Even so different positions might have to be found for each multiplex and people moving about in the room could affect reception. You would really be best advised to have an outdoor aerial fitted if this is possible. Are you able to receive analogue transmissions using your indoor aerial? This would give an indication whether digital reception might be possible after switchover.
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marie: The Digital UK postcode checker shows that you can expect very little by way of Freeview reception at your location. A good outdoor aerial might just about deliver a signal on Mux1 and MuxC from Tacolneston. After switchover reception is still not very good. Tacolneston offers poor reception on all six muxes, and a new transmitter at Lowestoft, which enters service at switchover offering the 3 PSB muxes only (Freeview Lite), deteriorates to variable reception in 2012. You might find satellite reception to be the most reliable option for tv viewing.
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Ian: If Mux New8 ever comes into being it would be very low power and aimed at Birmingham, so would not cause undue problems to Waltham viewers. The rather odd choice of C29 for the SDN mux at Waltham is the direct result of the shortage of available frequencies
in some areas created by the Digital Dividend. The COM muxes at Belmont and Waltham had to be found frequencies not in use at high power in overlapping areas. This gave C53, C56, C57 and C60, with C30 for Belmont and C29 for Waltham as a compromise. Even this arrangement leaves C29 at Chesterfield and C57 at Bolehill overlapping with areas served by Waltham, albeit with signals using vertical polarisation.
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Ben: The relative powers shown in the signal bars above do not refer to a fault or change to the transmitter. Mux2 and MuxA (both 64QAM and 8kW) carry more services at the expense of coverage, although this is normally only noticed towards the edge of the coverage area. The comparison for all the muxes is shown against the coverage of the mux with the best coverage, in this case Mux1 (16QAM and 10kW). If you have suddenly lost Mux2 it is most likely to be either single frequency interference on C31, wet leaves or reflections off wet roofs in the signal path causing deterioration of signal quality or ingress of rainwater in the cable.
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GCD: If you have a good analogue signal at present you should have no difficulty with Freeview after 22nd June 2011. All six muxes will be transmitted at the same power (100kW) and in group B which makes distribution easier than at present. Mux BBCB (the HD services) will be transmitted on C40, replacing analogue BBC1.
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Scott: Do you have a working BBC1 in the 800s? If the HD channels are present in the 800s it suggests you might be receiving an alternative region in addition to Sutton Coldfield.This could be Winter Hill which would explain the loss of MuxD (ITV4, Film4 etc). A slight increase in signal on C55 from Winter Hill would block reception of MuxD, also C55 from S/C.Try doing a factory reset to clear the channel list and rescan for channels or do a manual tune for each of the Sutton Coldfield frequencies.
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dave: From the Rosehearty relay you should have all the BBC tv and radio channels as listed at the top of the page plus all the channels on Mux D3+4 (including ITV2, STV+1 and Channel 4+1). With a HD television fitted with a tuner which supports DVB-T2 or a Freeview HD box you would also receive the Freeview HD services. According to the Digital UK postcode checker you might be able to receive a full Freeview service direct from Rumster Forest. Reception is shown as variable with Mux ArqA finishing up as good in 2012.I would keep your Rosehearty aerial though, if you do try Rumster Forest, as the reception does go through some changes as switchover progresses in other areas.
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Richard Barber: You are predicted to have good reception from Black Hill on all six muxes from 22nd June 2011, so one week to wait.Use a group 'B' receiving aerial set for horizontal polarisation to receive Black Hill. All muxes will be transmitted at 100kW so if you can receive Mux BBCA on C46 now, you should be able to receive the other muxes when switchover completes.
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Scott: Reception of all muxes will be more reliable after switchover. There will of course be occasions when distant transmitters are received due to the inversion effect but disruption to viewing should be much less than that experienced when high power analogue services swamped the low power digital signals. Sutton Coldfield will also no longer be sharing frequencies with Winter Hill or Emley Moor, two of the transmitters with which the service area overlaps.
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Sunday 12 June 2011 4:24PM
Woody: Is your aerial set for vertical polarisation and pointing to the Kimberley transmitter? What is reception like on BBC3 or BBC News? (These are also carried on Mux BBCA). It is possible at your location that signals have been found and channels stored for alternative transmitters including Waltham, Belmont and Sutton Coldfield. Check in the 800s of the channel list for versions of BBC1&2 that work correctly. If there are no other versions stored and all BBC channels are breaking up look for single frequency interference or intermittent interference. One other possibility is the signal is too strong, in which case an attenuator would need to be used in the aerial feed.