All posts by KMJ, Derby
Below are all of KMJ, Derby's postings, with the most recent are at the bottom of the page.
David Wilson: It is a feature of most boxes that, during the scan, the first set of channels found for each mux (in your case Rowridge) will be stored. The only other channels to be stored would be any regional variant which is different to that already found. In the case of Hannington this could be ITV1 which would usually be placed in the 800s. Some receivers actually store all the channels in the mux containing a regional variant, others store only the actual channel(s) with different content. As the BBC channels and COM muxes are identical for Rowridge and Hannington the only way of storing the Hannington channels would be as you suggest, to unplug the Rowridge aerial before scanning, or do a manual tune for each of the Hannington frequencies after first clearing the channel list. Note that during the switchover period the 2k and 8k versions of the muxes are often seen as a variation, so for a short time you might see many extra channels being stored. This situation will revert to what you have seen previously when switchover is completed fully on 18th April 2012.
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carole: You need to buy a set top box which has a built in RF modulator. This transmits the output of the box as an analogue signal on a UHF frequency so you can receive it via the aerial socket on your TV. For Freeview there are still a few such boxes available, but they take a bit of finding, more likely to find on Amazon than in a local shop! For satellite reception using a Sky box would be the best option.
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Simon Ash: The signal will be ten times stronger on the PSB muxes after switchover at Midhurst, so it is possible that you might notice an improvement in reception. However if the foliage is dense enough it could still block the signal, or give signal quality problems - what is analogue reception like currently? The Digital UK postcode checker suggests that a new transmitter due to enter service after switchover at Rowridge could offer good reception at your location. This transmitter does not offer the COM muxes until 18th April 2012, so best to try after that date if Midhurst is giving problems. Reception of Rowridge VP will require a group "A" aerial pointing SW with the rods set for vertical polarisation.
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lisa: 4th April 2012, Mux BBCA, C23, 490.0MHz, 64QAM 8k 2/3. Then from 18th April 2012, Mux D3+4, C26, 514.0MHz, 64QAM 8k 2/3..... SDN, C25, 506.0MHz, 64QAM 8k 3/4.....ArqA, C22, 482.0MHz, 64QAM 8k 3/4.....ArqB, C28-, 529.8MHz, 64QAM 8k 3/4. If required BBCB(HD) will be C30-, 545.8MHz, 256QAM, 32k 2/3. This information is taken from the Digital UK postcode checker, and differs slightly on the COM muxes from that given above.
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Rickenbacker: The Ofcom document shows the correct information. The explanation for the different information on this site lies with a change to the original plan with regard to the frequencies to be included in the digital dividend. C39 and C40 were originally part of the spectrum to be auctioned off, BBCB was only planned to use C39 temporarily. Once it was decided to keep C39/C40 for the use of existing services the offsets were no longer required on C41/C42, however C39 now received an offset to distance the signal slightly from other possible users of the digital dividend frequency C38.
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Gary & Dave Lindsay: There is an element of confusion surrounding the working of the COM muxes following DSO at Hannington which extends into the Digital UK predictions. C44 is decommissioned at Guildford on 4th April 2012 so it is likely that ArqA will be transmitted at full power from that date. C41 and C47 continue in use until 18th April, no deterioration is shown for the already poor signal from Guildford, so it would appear that SDN and ArqB from Hannington continue to use the low power antenna until 18th April 2012 as Brian indicated in the Switchover notes for Hannington.
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Roger Spinks: The COM muxes at Hannington are still using the low power antenna with a restriction towards the Guildford service area. This is to protect the low power digital signals from Guildford which share the same frequencies with the Hannington COM muxes. This situation will continue until DSO at Guildford which takes place on 4th April 2012 and 18th April 2012. The restriction at Hannington will be lifted when the frequencies are decommissioned at Guildford. In the meantime the Hannington signal will have a net reduction in signal strength for some viewers due to the change to 64QAM, 8k working.
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Edward S: In addition to my post above, did you do a factory reset to clear the channel list before rescanning for channels? If the old 2k frequency is still stored in the LCN positions in the channel list the new 8k versions will appear (if found) in other positions, usually in the 800s. You should have BBC4 somewhere!
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Ray Coville: If your aerial is pointing to the Porlock relay transmitter you will only receive the PSB muxes. The COM mux owners declined to extend coverage to further relay sites due to the extra costs that would have been incurred. It is possible to receive the COM muxes from transmitters in Wales in some parts of Porlock. Carmel is probably the best one to try.
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Sunday 19 February 2012 7:10PM
Mick Shearer: What services are you refering to regarding getting a signal? The postcode of the location in question would be usefull in order to do a check of the predicted reception. Generally speaking TV reception is often from Bolehill on the PSB muxes only. Regarding DAB radio the Bolehill transmitter is listed for inclusion in the plan for Derbyshire. When completed this will deliver the BBC national multiplex, and should also carry the proposed Derbyshire multiplex in the event of it actually coming on air!