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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.

J
Diagnostics - old version
Monday 24 October 2011 4:59PM

bianca: Disconnect both boxes from the power supply and leave them sitting for about 5 minutes before reconnecting them, although it does sound though that at least one of them is faulty.

However, if once powered up again you find that the remote control will not take one of them out of standby check the batteries fitted in the control.

It would also have been of assistance to know what brands the boxes are.

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Lynn Forbes: The reception should improve tremendously on March 21st, and the analogue signal will no longer exist then. As this location is only at 2 miles away from the transmitter I would be inclined to scrap the existing 10 years old aerials and replace them with DMlog periodics (as seen in the link) these being of strong construction as well as having a low wind resistance, excellent for this type of situation.

It might also be worth replacing the co-ax down leads at the same time, just in case dampness has crept in over the years.

By the way the aerials being "Vertically" mounted at pointing towards the transmitter at 94 degrees.

Online TV FM DAB Aerial sales

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Glenn: The excellent sensitivity of Humax boxes tuners means that they will lock onto the first signal they receive of sufficient strength as they scan up the channels, this meaning that any station using Mux Channels lower than Waltham will be stored first, and in your case its likely to be Sutton Coldfield's BBC1 on Mux Ch43 being stored before Waltham's BBC on Mux Ch61, this being pushed up into the 800 ranges, likewise Sutton Coldfield's ITV1 on Mux Ch46 stored before Waltham's ITV1 on Mux Ch54, this receiving similar treatment to BBC1 and being allocated up to the 800 ranges.

The only way to get over the problem is to scrub everything stored, then manually tune in the two Mux channels mentioned (Mux Ch61 & Mux Ch54) storing results after each scan, then use the find other channels (or whatever its called on your model) to search for the remaining multiplexes.

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Lynn Forbes: Well when you referred to "aerials" and "them" I assumed that the previous set up involved four individual aerials, however there doesn't necessarily have to be, as one is suffice if a 4 way splitter distribution amplifier was fitted in the loft, this way being less costly and just as effective.

Although the aerial installers will know this, but the only Freeview channel out of the six that's presently operating that will give a rough idea of what like the reception will be next March is Mux Ch48, the channel that is presently used for BBC4 / CBeebies / BBC Parliament, this transmitter being on higher power than the rest although still well under what it will be next March. (according to Ofcoms listings)

By the way, meant to previously mention that although the analogue signal will cease to exist come next March, it is received from exactly the same direction as Freeview. (Ch48 th) 

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karen: I see its stated that Sutton Coldfield is liable to interruption, so just in case this is the problem I would try scanning later on in the day, that is unless you can possibly verify from a neighbour that ITV1 etc is OK with them.

If it is, then with you being only 12 miles away from Sutton Coldfield its possible that you are receiving a signal that's on the verges of being too powerful, as this can cause blocking with sensitive tuners such as is used on Panasonic's, this not necessarily happening on all channels.

Just purely for a test, if you have access to a set top aerial try another scan using that, if you then receive ITV put the normal aerial back in again and see if it vanishes, if it does then you will require to purchase a simple attenuator to place in line with the sets aerial socket.

This said taking it that you do not have any form of aerial booster fitted, as if you do it must be removed, this making an attenuator unnecessary.


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Angie: ITV4 etc on Mux Ch27 is from Ridge Hill @ 14 miles away, as are Ch's21 & 28.

If you receive Malvern best then the Mux Channels used are Ch53(BBC1) - 57(ITV1) - Ch60(HD service) - Ch50(SDN) - Ch59(ArqA) - Ch55(ArqB)

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sue may: Although having no personal experience of this device, they are however apparently notorious for this type of problem, have you tried the usual 0000 or 1234 codes? although the master code is stated as being 1998.

A remedy that many seems to find works is, press the standby button and immediately switch the boxes power off (or pull the power plug from the rear) then without waiting power the box up again and observe if the "first time installation" screen comes on.

You may have to try quite a few attempts at this, but its generally reported as eventually being effective.



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J
Diagnostics - old version
Tuesday 25 October 2011 12:52PM

sandra grayson: You really do have to provide a post code to help assist in replying to this type of problem, as you might be in an area whereby the signal received is on the verges of being to powerful, as that can be one possible reason for the problem, that is as well as many other others!

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Lynn Forbes: I am not really 100% sure what you mean by roof packs, is it the Chimney installation kits seen which use a Log 40 aerial? if it is then that's fine except that only one kit would be required to feed into a distribution amplifier, or alternatively one kit plus an extra Log 40, as it could be mounted on the same pole as the other aerial, of course suitably spaced downwards (or upwards) from it. (about 600mm)

Although if it is only two aerials that you are thinking about then what is the plan for feeding two aerials into four flats?(one having two points) as you shouldn't really loop aerial sockets from one to another in the same way as is done with electrical power sockets, as although in many cases this arrangement might work OK, however its not always guaranteed to depending on what someone in another room might be plugging into the socket, as using the same lead for more than one device automatically means less signal to each, and when dealing with Freeview signals that's the last thing you want.

That said, in the flat that has two floors you might get away with looping, but even in that case its still far better to use a simple two way powered splitter feeding the two outlets, as this is guaranteed not to cause problems.

Its because of this type of potential problem that I suggested a distribution amp / splitter from one aerial.

By the way, although being an engineer I am not really connected to the company in the link, but just recommend them as they, like myself, are inclined to favour log aerials and offer a good selection of them.

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Michelle: As Briantist has said, BT Vision is allied to Freeview using a normal aerial, and so if your Freeview TV's doesn't work well neither will the BT Vision box, with your reception possibilities not being able to checked on without knowledge of your post code.

However "if" you are meaning the Freesat box doesn't work with the Satellite dish, then this suggests that either the dish is out of alignment and requires re-setting, or that the dish was being used for other than Sky reception, and if so will as was previously mentioned, require re-aligning.

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