All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
KB Aerials Sheffield: Yes, had a look at the Fringe version you mentioned and it fits the purpose as far as frequency range is concerned.
Although in practice its really one of these cases where a large portion of hit and miss comes into it because of the number of variables involved, like what strength the unwanted signal is at after passing though the filter Vs the sensitivity of the TV / box that the signal is being fed into, and considering that some sets like Panasonics and a few others are extremely sensitive devices, the end result might be that the receiver still locks on to the unwanted signal.
I would certainly be interested though to hear reports on the outcome of any tests carried out using this type of filter, that is if it was being used in an attempt to alleviate the type of problem experienced by David, I have to say I do have my doubts on the effectiveness of it, but one never knows!
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C Lloyd: All should change on the 17th of this month (Switchover) as far as the channel you have mentioned is concerned, as I very much doubt if you will experience any problems after then.
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Mark: A blue screen is usually a "no signal" default screen on many TV's and "may" apply on some boxes, its purpose is to let the user know that the equipment is actually switched on whereas a black screen wouldn't.
This showing up on an intermittent fashion is liable to indicate a bad connection in either the lead coupling the TV to the Freesat box, or less likely the input from the dish, of course there is the possibility that the box itself could be faulty.
The first thing I would check though is the scart coupling into the TV, as although there is no RF signal in this connection it does keep the TV operating on an A/V input and not the normal aerial operation, and "if" there is either no aerial used on the TV or there isn't any signals to be picked up in your area, then TV would default to showing a blue screen if its scart input connection was defective.
This would also happen if the box wasn't switching out of standby properly, as then it would give the same symptoms as a faulty lead between it and the TV.
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Mark: Just a small addition that I forgot to include, a quick way of verifying a faulty scart switching connection being, if when you see the blue screen try pressing the TV's A/V button as that over-rides the auto switch.
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Mark: You should be able to get good reception from Sandy (Anglia) on its three main Mux transmitters "if" your aerial is mounted on a normal pole in the same way as done in most caravan installations.
What you have said suggests that you are using an indoor (set top) type of aerial, and if you are that is not good enough at the distance you are from the transmitter, Sandy Heath being 26 miles away.
You don't really require a so called "high gain" type, as a standard log periodic aerial called a Log 40 is suffice, these being easy to mount as they do not have the usual large reflector on the rear.
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Andy: Most likely not! as the masthead amplifier being unpowered will likely drag the signal right down to under the reception threshold of your receiving equipment.
Doing the type of thing you suggested sometimes can work if a person is within a few miles of a high powered transmitter such as Belmont, but Belmont is 57 miles away and as such can be discounted as far as the type of problem you are thinking about is concerned.
The trade predictor indicates you as having a number of reception possibilities, Sheffield shows as being promising from the 24th of this month and Chesterfield likewise from the 10th, its a case of what station your aerial is pointing at?
The only thing I will point out is that for the latter two transmitters mentioned your aerial should be vertically polarised, not horizontal, but I would not make any changes as yet with your amplifier, as if you are using any of the local transmitters their power output "might" not be high enough to cause a problem, however should there be any suspicion that it is, then a simple attenuator in line with your equipments aerial socket will cure the problem.
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gill: In addition to what Briantist has given you the link for, "if" this all happened within 30 minutes or so of receiving the BBC OK on your previous box, then could you please come back with the information regarding the model number of the new Samsung box.
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Janine: Another thing for you to consider is "if" you have a distribution amplifier feeding the TV into different rooms, as high static in the aerial system can blow the input circuit on these in the same way as it can do with a mast head amplifier, this being very common in some areas.
Should what I have mentioned apply then try a test by-passing the distribution amp, that is just coupling the lead from the aerial directly into the lead that feeds one of the TV,s.
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Mark: A splitter of a non-powered type will drag a signal down, for a test try coupling the TV directly to the aerial, if you find its OK by doing that then purchase a powered two outlet splitter, as that will provide exactly the same signal strength to the two TV points, even possibly with it being slightly boosted!
I would normally have suggested Argos as a possible source of the splitter, but they have really gone downhill with their selections, only offering a SLX two way version @ £19.99, you can get one much cheaper than that.
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Thursday 4 August 2011 8:59PM
Briantist: I see I will need to scroll up before posting, as I was unaware you had posted a reply of a similar nature, it being under the masking.