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All posts by jb38

Below are all of jb38's postings, with the most recent are at the bottom of the page.


Simon: If I could just add my contribution to the discussion, the way I see it is with you being located virtually next door to the Brighton Central transmitter (20watts) and also located at only 1 mile away from the 4Kw Whitehawk Hill transmitter its amazing that you can receive anything, that is except by using something like a set top box aerial, so if you have access to one (non-amplified type) try a test using that, because unless some massive (but unknown) obstruction exists between these stations and you then the chances are that your receivers tuner will be permanently overloaded with an excessive level of signal.

The only plus point I see about the situation being, that by the fact of you having reported that some flat dwellers are seemingly able to get good reception suggests that the distribution amplifiers used in the block are not suffering from the effects of an excessively strong signal albeit that they certainly will be receiving one! and with the most likely reason for the other flat dwellers not really having problems being simply down to the fact of the different sensitivity levels that exist in the variety of tuners used by different brands of sets, with types that are "deaf" to distant stations really coming into their own where excessive levels of signals are involved. (i.e: as though they had an inbuilt attenuator!)

By the way regarding the variable attenuator you referred to, these type of devices aren't that much good where really high levels of signals are involved, as the RF sometimes partially by-passes the internal adjuster, fixed types with a high dB level of reduction always being superior albeit there is an element of hit and miss involved about choosing one, unless that is the actual signal level being received has been assessed with the aid of a professional signal level meter, such as was likely used by the installers of the distribution amplifiers.


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Malcolm Brooks: You should try manually tuning it in, that is if your TV allows manual tuning to be carried out as some devices don't.

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Mrs Helen Clenshaw: I realise you have said that your TV is not HD but is it HD ready? insomuch can you see a socket on the rear marked HDMI? and are you thinking along the lines of purely a receiver or a PVR, both being able to be obtained as either a Freeview or a Freesat types, these devices being "easy to use" tuner / recorders.

Further advice dependent on answer.

PS: Model number of TV in question would be of assistance.


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Jim: Just as a small addition, the point I was really getting at is, that anyone who resides as close as 1 mile or so from a 4Kw transmitter would virtually have to be located in a cellar not to be able to obtain some form of reception on their TV or box using a piece of wire as short as 8" or so pushed into the aerial socket, (middle of!) then the device re-tuned with this installed.

However, it will be interesting to hear the outcome of the installers visit.

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J
Connecting it all up | Installing
Wednesday 28 March 2012 9:14PM

Sid Barnett: Excellent news! really pleased to hear that you scored a winner there and glad to have been of assistance.

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Simon: Another little point to consider based on what you have now found out, being that if it transpires that your flat is indeed fed from a twin distribution system, then going back to the issue of you having mentioned that the variable booster made the situation worse automatically means that you have to now have to consider that the possible reason for this was because that actual distribution amplifier was suffering from an element of input overloading instability resulting in it distributing a low quality signal, this being why no amount of reducing by you would clear it as its not you its overloading. Not saying that is is though, but its something to consider.

I haven't actually seen you mention it yet, but in situations like this you should always carry out frequent signal strength / quality checks so that you know what is happening, especially to the most important element of the signal, its quality!





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Gary: DSO (digital switchover) work of an on-going nature is taking place at the station in preparation for its high power switchover in September, and as such no completion dates can really be given.

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J
Do I need to buy a booster? | Installing
Wednesday 28 March 2012 11:24PM

Bob Abbot: Thanks for that update, and would appreciate similar regarding the outcome of the riggers visit.

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Sam in Bournemouth: Its not really possible with questions of this nature to offer any assistance with any level of accuracy without knowledge of your post code, (or somewhere very close to) this used for purposes of checking the level of signal expected in the area.

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J
Rowridge (Isle Of Wight, England) transmitter
Wednesday 28 March 2012 11:38PM

Ray Gusta: Although some TV's can switchover to standby if no signals are received for a given period of time I think that what you have been told is a bit far fetched to say the least.

What is the model number of the Samsung?

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