Briantist: Alan Twigg has posted When will the children's http://t.co/uctg7tTTX1 @2014prmedia @mckaysinead @messerstanton @pepperandspot @mosh Briantist: jb38 has posted michele Just out of curiosity when a http://t.co/M0mneIH28q @2014prmedia @mckaysinead @messerstanton @pepperandspot @mosh Briantist: jb38 has posted michele If the aerial person has you http://t.co/AERvaysMHx @2014prmedia @mckaysinead @messerstanton @pepperandspot @mosh Briantist: Cliff Sinclair has posted Cliff Sinclair would you i now http://t.co/WRylB4aLBd @ almufasatwit @mjpauto @sixtypaul @randomgeordie @mos_sy Briantist: Jon has posted Nothing on the com7 multiplex BBC Four http://t.co/kYIkjoPEvy @semiramis1952 @nezburger @edmundreal @talisman56 @muggsy14 Briantist: MikeB has posted Cliff Sinclair Dont be embarrassed TV s http://t.co/HwAlMHRUkK @ almufasatwit @mjpauto @sixtypaul @randomgeordie @mos_sy Briantist: MikeB has posted David Carter According to R T Investigations no is If http://t.co/aMWAZt6kAx @crnwlltruckshow @champagne30 @knitspincake Briantist: michele has posted Hi guys Well here is the latest I http://t.co/odmFlhPnqs @2014prmedia @mckaysinead @messerstanton @pepperandspot @mosh Briantist: Cliff Sinclair has posted MikeB thanks Mike you must the http://t.co/FR2cgFvGN4 @ almufasatwit @mjpauto @sixtypaul @randomgeordie @mos_sy Briantist: David Carter has posted I live in Leicester post code le2 7ef My box 2 http://t.co/mg1tRi20Yi @crnwlltruckshow @champagne30 @knitspincake
Freeview is broadcast on digital multiplexes. This means that, once broken down into a stream of bits, each television channel is combined into a single transmission of 1s and 0s. This means that reception is of the multiplex first if this is lost it affects all the channels in the multiplex in the same way.
The signal strength received by the box or TV for a particular multiplex from a given transmitter determines if the data can be received or not. So, a poor signal results in no data, an adequate signal in perfect data and a low signal in either none or all.
Poor digitalsignal levels do not result, as they do with old-fashioned analogue television, in a sub-standardpicture or sound. Poor signals often result in a perfect data-stream, but are prone to periods of no reception. Sometimes this will be for hours, but can also be several times a minute when caused by induction from fridges, freezers, central heating systems, two-stroke scooters, baby monitors and so on.
The RF connectors need to be in very good condition to work. There are two general types:
Factory-fitted connectors are very reliable as they cannot easily be taken apart, but they can be damaged by wear and tear. On the female-type the central section is often composed of two parts which can often be forced apart, resulting in a poor connection you can push them back together if this has happened with a pair of tweezers. On male connectors if the central pin is damaged, you will need a new cable. If there are any loose partials in the connector, remove them.
Another problem with these cables is that quite easy to sprain the connector at the back which causes little obvious external damage, but disconnects the internal connection. This happens often when a set-top box is pushed backwards into a cabinet.
Hand made cables can also suffer from similar problems to factory made ones and they are also prone to accidental damage from a cable being pulled. If such a connector is not firmly attached to the cable, the connector may need refitting.
Make a visual check of the cables. There are a few basic checks:
If the cable has been slashed or cut, it will not be very effective or reliable. If such a cable is fitted externally, this can allow rainwater to enter the cable and this will reduce the signal levels.
You can easily damage an RF cable by crushing it, for example in a door. If the outside of the cable has a permanent kink in the cable or has been very tightly looped, this could be the site of damage.
You can make a visual check of the route between the aerial and the transmitter. Any form of obstruction will damage the digital signals. In particular trees coming into leaf, as these will leech the signal before it reaches your aerial. This applies to both trees adjacent to the aerial and at a distance.
Another common problem in cities is building work. A large crane will often change position many times during the day, and if this is between your aerial and the transmitter this can reduce the signal levels in an unpredictable way.
If your system uses a booster, the power may have failed. Check the fuse to the power to the booster.
Cliff Sinclair: As the page above explains, the first thing to do is check your system for faults. Loose aerial lead (or busted?), is your aerial OK, etc
You should be fine for Waltham (your closer than I am), so it could be that your aerial circuit has a problem, and its that mux which is showing the first syptoms.
Elliot: Which transmitter are you tuned into? Depending on the direction of your aerial, your fine for the Wrekin, Malvern or Sutton Coldfield. But your just 1km from Kiddeminsters transmitter - which might explain why BBC breaks up, the signal muct be very high.
thanks Mike - you must never sleep!!!
working through the cabling etc now and probably in the light tomorrow.
If I don't get back its because I am embarrassed to have found something that i should have got off my behind to find and not immediately asked!
Thanks for your help
would you believe....
i now have some interesting additional channels?
I am sat in central Leicester watching 'the boot room ' on Notts TV channel 8 (which i have been told im not supposed to get.) More HD channels (BBC News, al jazeera, community, C4+, BBC 4) and a load of 200 channels I've not seen before.
"come with me to another dimension!!!!!!"
I think I'll go and get back in my dark box and wait til tomorrow