All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
richard gains: Basically yes, as dishes used for Sky are completely compatible for use with Freesat TV's / boxes.
Also, if the LNB on the dish is of the dual or quad variety then it can operate with a Sky box at the same time as a Freesat one.
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richard gains: Of course the "dual" aspect of my latter comment only applying for purely TV use, as any dual channel Freesat recorder requires to use both inputs from the LNB, so a quad LNB is essential if any other Satellite device is intended to be used as well as the Freesat recorder.
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Chris,(Sheff) / Robert Hill: According to what I see on the trade predictor, MuxA's present Ch52 changes Ch51 on the 21st, (next week) likewise MuxC's present Ch50 changes to Ch52 on the same date.
Chris: You should also be aware that any device receiving a signal that's on the verges of being slightly too strong can result in that device being hesitant about resolving a picture, this being due to the tuners circuitry taking time to stabilise on the excessively strong signal.
If however the signal goes over the level that allows this stabilising to take place, then it can completely block (swamps) the tuners selection circuitry resulting in nothing being received, this mystifying some people as to why they aren't receiving a signal.
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Ian Thompson: If you are referring to receiving signals from Emley Moor, then yes!
Remember a complete factory type re-tune is required then, or just carry out the first scan without the aerial connected, this to blank out the EPG memory, then re-connect the aerial and carry out the second scan
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Robert Hill: Yes, I did of course realise that you were only giving a reception report at your location for information purposes, and as such shouldn't really have included yourself in the postings heading, as the main content of it was mainly directed towards Chris.
It was only because the issue of that particular channel number came up that I thought it prudent to give a reminder that its changing next week, as although you personally might well be aware of this fact, that doesn't necessarily apply to all who may be reading through postings concerning Emley.
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ronald bailey: You have got me a bit puzzled, as Hemel Hempstead isnt listed as providing an HD service until next April.
Are you sure you aren't receiving your signals from Sandy (Anglia)?
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Ian Grice: A small point I wondered about is why you are using Waltham at 31 miles away whereas Sutton Coldfield is only at 19mls?
I ask this because the trade predictor on your post code indicates good reception across the board being possible from Sutton Coldfield, (especially high powered BBC1 Mux Ch43) whereas Waltham indicates either poor or no reception being possible, (on SDN Mux Ch29) with this not really improving at any time.
As for the TV that is susceptible to interference, what model is it?
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Ian Grice: Further to what I mentioned regarding you stating that Waltham is being used, carry out a signal test whilst on BBC1 and note what Mux channel number is shown, if its Waltham is Ch61, whereas if its Ch43 then its Sutton, which although maybe wrong, I suspect it might be! this being based on your reported signal strength.
If looking at the aerial it should be facing roughly West (actual 283degrees) for Sutton, Waltham being slightly to the North of East. (actual 53degrees)
Regarding the aforementioned signal strength, if you get almost 100% signal / quality before it reaches your "first" splitter amp, then although this is maybe inconvenient to arrange, but I would alter your set up whereby the aerial goes directly into a six way splitter to feed the various rooms, thereby doing away with the two way splitter presently used.
The only reservation I have over what Dave Lindsay has suggested is that I would keep the use of a powered splitter for this purpose, as you aren't exactly that close to a main station, and it has to be remembered are presently receiving a high powered Mux from wherever (BBC1) without a problem, that is even although you are using two powered splitters, which as said in my original posting doesn't in reality give that much of an amplification to the signal, this no matter what fanciful claim might be printed on the label.
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Graham: If you are receiving from Sutton Coldfield (as The Wrekin also possible) then blank out the memory again and manually tune in ITV1 on Mux Ch44 (The Wrekin ITV1 Mux Ch23) after doing so using the "add channels" facility to load the remainder.
I wouldn't fuss about too much though, as next week on the 21st another complete re-tune will be required on switchover stage 2, this where reception improvements should really be noticed due to power increases.
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Thursday 15 September 2011 6:04PM
Ian Grice: The boosting effect (in reality) of most normal distribution amps is quite low, that is unless one has been chosen that isnt, but if it did exceed what was required and was causing problems on TV's connected into the system, then a simple attenuator in line with its input from the aerial would rectify the problem.
This said provided it wasn't the type of distribution amp that powered a mast head amp or similar, as then an attenuator would be required on each TV that was affected.