All posts by Stevem
Below are all of Stevem's postings, with the most recent are at the bottom of the page.
Derek
I misread your location but was fascinated that your situation was the same as mine.
I found a site that is a mine of information including this:
Post switchover Rowridge will (uniquely) be transmitting in vertical as well as horizontal polarity in order to lessen the chances of co-channel interference. The aim is to give people the option to use either polarity and therefore take advantage of cross polar rejection to help reject the unwanted transmissions.
The site is Rowridge Transmitter and much of the technical stuff will make more sense to you than it does to me.
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The power will be boosted to the muxes A,C,D listed at the top of this page and which contain what I would call the minor channels.
This delay is to wait for the switchover at Crystal Palace to complete (4th and 18th April) and to avoid Crystal Palace users getting interference before then.
The table at Rowridge Transmitter gives the details and the link just above the table labelled "Digital UK`s installer guide ..." says that a retune 'may' be required on 18th April.
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Monday 19 March 2012 11:37AM
Derek
I live on Canford Heath as well and have the same boosters and seen the same co-channel interferece as you. Prior to the 7th March, BBC channels were stable but ITV, Channel 4 etc were often poor, presumably because of their low power. Indeed on the morning of 7th March it took two tunings to find ITV etc.
Analogue ITV used to be poor but lately it has been very good and a suitable alternative for when digital was unwatchable. I hope the boost to 50kW on Wednesday solves the problem, but it is a shame that the change of BBC channels is now subject to interference.