All posts by KMJ, Derby
Below are all of KMJ, Derby's postings, with the most recent are at the bottom of the page.
D A Patterson: Have you considered having an aerial pointing at Sutton Coldfield? This would give you all the Freeview channels instead of just the PSB muxes. Also , as the main transmitter for the West Midlands it is better able to provide a reliable service with its back up provision.
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denise farnaby: do you have any duplicate channels stored in the 800s of your channel list? If so, do these channels also go off randomly?
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John: Whitehawk Hill should be the first option for the postcode given, as this will transmit all six muxes after switchover. As Dave rightly suggests, Findon is an option, but only for the PSB muxes as this is a Freeview Light relay.
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Simon: Are you sure that the channels tuned in are from Whitehawk Hill on C60-, rather than Rowridge on C24 or Brighton Central on C41? It is possible that the gain on the distribution equipment might need turning down if you find that the correct frequency (C60-) is giving the appearance of weak signal. What is the signal quality like on the problem mux?
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Chris: There are no changes shown for Mux1, however early on Wednesday morning (7th March 2012) the power of Mux2 and MuxA was increased to 2kW and MuxB to 1kW. This was to counteract possible interference from the new vertically polarised digital transmissions being introduced on the same frequencies at Rowridge for DSO. It is possible that your receiver is now overlooking the weaker signal on Mux1 in the face of these nearby stronger signals.
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Miikescki and Dave Lindsay: It is likely that viewers in Worthing are receiving BBC South from the Findon relay, rather than the weaker option from Rowridge. Findon is transmitting digital signals at 2kW, rather than the much lower power of 10W which would have only covered the old analogue service area. It could be that this was planned to become a regional correction transmitter for the area, following the change to BBC SE from Whitehawk Hill.
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Dr T J Purnell: Further to what Mark Fletcher posted above, At present MuxD/ArqB shares a frequency with Whitehawk Hill, which is likely to block reception of this mux at your location. From Wednesday 14th March 2012 the frequency of ArqB will be C50 from Midhurst. The Digital UK postcode checker predicts that you will then have good reception of this mux, although the power will be low at 1kW initially you are not very far away from the Midhurst transmitter.
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Sarah: Failure to retain all channels is usually caused by insufficient capacity in the memory of the tuner in the Freeview box. As you say deleting unwanted channels is the solution. Did you do a factory reset to clear the old frequency from the memory? Also, remember that MuxB will currently deliver duplicates of the BBC radio channels plus BBC4/CBeebies, BBC Parliament etc. These will also need to be deleted. This mux will no longer be a problem after DSO2 on 21st March 2012.
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dave williams: The Digital UK postcode checker predicts that you should be able to receive signals from Winter Hill and The Wrekin at your location. To obtain more accurate information click on the Digital UK link, then change the address to include your house number. Remember that no reception predictions are 100% accurate as the data used does not include specific local obstructions such as trees or tall buildings and also cannot include local interference problems not attributed to broadcast transmitters. Storton Wales is shown as having variable reception, there is no prediction for Storton England.
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Wednesday 29 February 2012 8:00AM
Mike Vander: Analogue BBC2 and Mux1 are switched off permanently at a convenient break in programs between midnight and 1am. Other services are liable to be interrupted temporarily, Analogue BBC1 changes frequency to C63. Mux BBCA comes on air by 6am. On 21st March all remaining analogue services and low power digital services are switched off and replaced by the full power digital transmissions including the HD mux. Services are again expected on air by 6am.