All posts by jb38
Below are all of jb38's postings, with the most recent are at the bottom of the page.
Michael : Have a look at the EPG listings and if (27)ITV2+1, (30)5*, (38)Quest are also missing then Walthams mux Ch29 has not been picked up during the rescan, and so you can either go into your TV's or boxes "manual tune" facility and carry out a scan on that channel, storing anything found which will automatically be added to the EPG listing.
Alternatively you can carry out an auto-tune "with the aerial removed" to blank out anything already stored, then once completed reconnect the aerial and carry out a further normal auto-tune, hopefully this resulting in ITV3 etc returning to the EPG listings.
By the way, when this sort of thing happens
its an indication that the mux channel is only being received at a low signal level, and so this should be kept in mind if ITV3 etc is inclined to suffer from glitches once that it is picked up indicating that your aerial system possibly requires improvement.
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darren warner: If all you had done was to disconnect the cables from the TV for the purpose of mounting it on the wall, then it should not have been necessary to carry out another retune as the channels should still have been stored in the tuners memory.
However, without having knowledge of the Panasonics TV's model number try pressing - Set up - DVB tuning menu - Update channel list and wait to see if the BBC channels appear, if not then further advice can be given if you indicate your location, this in the form of a post code or one from somewhere nearby: e.g: a shop, as that will enable details of the transmitters involved to be checked out, especially the mux channels used by the BBC.
By the way, have you made any alterations to the coax cabling used to feed the Freeview signal into the TV's aerial socket, such as possibly extending it?
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Chris: If all other channels are being received OK then there is no reason for not being able to receive HD transmissions from Heathfield which are transmitted on multiplex Ch47.
However in the interests of accuracy more detailed instructions can only be given if the model numbers of both the Sony TV and also the Humax box are given to enable the specifications of both devices to be checked out.
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Peter Thompson: All ports on a Quad(?) LNB operate completely independent of each other and so it doesn't really matter which ones you use to feed the boxes, and so if you run a satellite grade coax from your upstairs boxes LNB socket (LNB1 if a Sky+ box) directly to "any" of the dishes LNB ports then yes! you will be able to receive the free channels.
The other point being, in a satellite system every box is independent of each other because each has its own feed from the dish, and so the easy way to remember it is that a Sky box and an LNB port work entirely on their own irrespective of what the other LNB ports are being used for, as some people uses a Freesat recorder box on two ports and a Sky+ on the other two, or alternatively four different Sky (standard) boxes each with their own port.
By the way, is the subscription card that you refer to for the purpose of viewing Sky package channels? or are you meaning the £20.00 free channels viewing card? as the standard £20.00 viewing card only really enables a few (and only that) additional "free to view" but encrypted channels to be viewed as well as enabling you to have the correct local news service for your area, otherwise the default news area is London.
Finally, is any of your boxes Sky+?
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Chris: Just to add to that already said earlier on, if these devices are relatively new then ask your relative to have a look at the user manuals for each of the devices in question, and in particular the section titled "Specifications", then look down the list for "Tuner" and check if DVB-T2 is seen mentioned, because if only DVB-T is seen then the device cannot receive HD transmissions.
If though they are unable to find the manuals then this can easily be checked out if the model numbers are given.
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Peter Thompson: The problem that's liable to be experienced if attempting to use sockets or cables intended for use with normal terrestrial reception for satellite purposes is that there is always the possibility of a small (not much larger than a match head) ceramic blocking capacitor having being fitted somewhere in line, although its usually positioned behind the wall plate, and with its purpose being to block any stray voltages from equipment being used from travelling along the coax to other devices or vice-versa.
As Sky boxes send both DC voltages and a high frequency tone to the LNB for polarity switching and band changing functions the aforementioned capacitor would block these functions (at least the voltage) and kill reception, this why its not advisable to do that unless each end of a "continuous" run of coax is accessed, plus of course that normal coax cable is not really designed to be used with a higher frequencies associated with the down lead from an LNB.
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Mazbar: Although what you have said is undeniably quite correct its something that cant exactly be called commonplace, as Quad or Octo LNB's operate in a slightly similar fashion to that of multi-switcher boxes used in communal dish systems and where there is an element of common circuitry being involved across all ports, albeit of course not in the RF sense, the only difference in the case of Quad or Octo LNB blocks being that there isn't a constant voltage power supply being involved, and if slight dampness gets into the circuitry over a period of time causing mild corrosion to occur then this is liable to affect all outputs and cause an element of inter reaction between them.
Of course this can also be caused by manufacturing defects, although not to the same extent as the causes mentioned.
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Barbara Mardell: What model of DVD recorder are you referring to? and when you mention Sky are you referring to a standard box or a Sky+ HD type?
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Saturday 9 March 2013 12:19AM
Peter Thompson: If the upstairs socket is not made for "F" connector use then its not suitable for satellite reception, and likewise is liable to cause a short circuit to the dish control control voltages sent "out" from the Sky boxes LNB "F" sockets if connected into them.
I feel that you are possibly being mixed up with the wires that you refer to in the loft which are possibly used for normal reception via an aerial, sometimes being fed into a Sky boxes "normal" aerial socket to pass through the box and onto a normal TV in another room so that Freeview can be viewed as well as the Sky signal sent out from RF1/2, as its unusual for a coax cable from a Sky box to be found anywhere in the loft unless just passing through it en-route to the dish wherever it might be installed.
The best way to understand it is that a coax cable from a Sky box LNB1 (or 2 in the case of Sky+) has to be continuous from the box to the dish and not pass through anything unless specifically designed for satellite use, nor can a satellite feed be split in the same way as is usual with Freeview systems via a normal aerial.
By the way is the dish you refer to yours? and not one used in a communal system, also if only one input feed is being used then it has to be connected into the boxes LNB1 and the box adjusted for single feed operation, this done via the menu.