I am missing a transmission multiplex?
Brian Butterworth published on UK Free TV If you are missing a single multiplex on a single frequency, it may be that you have a local source of interference - such as a VCR, games console or Sky Digibox - causing the problem rather than a poor signal from the aerial.
Try eliminating any such devices, and if one does appear to cause the problem, change it's RF output channel to a new value.
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Friday, 7 January 2011
D
Dave11:58 PM
Cheltenham
I have a new TV with integrated Freeview HD (although Freeveiew's HD service hasn't started in my area). I only get the channels in MUX C through Freeview although my EPG shows channels in MUX C & D.
My postcode is GL53 7AF and I've tried rescanning.
Do I need a new aerial?
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Dave's: mapD's Freeview map terrainD's terrain plot wavesD's frequency data D's Freeview Detailed Coverage
Saturday, 8 January 2011
Dave: I would check the Two frequency interference
| ukfree.tv - independent free digital TV advice page, but you might just want to hang on for switchover, 20th April 2011, before you splash out on a new aerial.
You are not predicted to get great reception on a couple of multiplexes even after switchover.
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Wednesday, 20 July 2011
J
jo 7:52 PM
Dunstable
i have lost all BBC channels! someone help please
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jo's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
A
Alex10:26 PM
hi, lost all my bbc channels, have all of the rest, any ideas. Glasgow south side
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Thursday, 21 July 2011
Friday, 22 July 2011
Alex: Please can you also see Single frequency interference | ukfree.tv - independent free digital TV advice ?
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Thursday, 9 August 2012
K
Kev12:54 PM
Chippenham
I have lost all BBC channels on my freevies tv and freeview box for the last few days. My transmitter is at Mendip which shows no faults. All other channels are ok so I don't know if its a transmitter problem or an problem with my ariel which appears to be ok. Any ideas would be appreciated.
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Kev's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
M
Mark Fletcher12:58 PM
Halifax
Kev,Chippenham.I would look up inversion effect as a likely candidate for your recent difficulty as such.
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Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
Monday, 13 August 2012
K
Kev8:29 PM
Chippenham
Mark, I now have BBC channels on some receivers but, not all. Mendip say they have no transmission issues. I suspect something has weakened the signal and now some of my weaker connections/receivers are exposed as no longer being good enough. I wonder if my new neighbours could be using some equipment that has introduced the interference or if the signal been weakened by more channels being crammed into each MUX?
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Kev's: mapK's Freeview map terrainK's terrain plot wavesK's frequency data K's Freeview Detailed Coverage
M
Mark Fletcher10:16 PM
Halifax
Kev,Chippenham.That could be a possibility if as you implied your new neighbours using some equipment could suddenly introduce interference.
It is unlikely though that more channels crammed into each mux will weaken the signal quality as such.
One other likely candidate that you mentioned only affectimg the BBCA multiplex on frequency 61 from Mendip the highest frequency used on this transmitter as such is possible aerial erosion.Check your main aerial lead and its main aerial plug as well as the aerial socket(s) of that main aerial itself for any signs of water ingress and rust stains as the highest frequencies suffer more in this situation than the lower frequencies.
If aerial erosion is the culprit then you may need to replace either the main aerial if it is eroding or the eroding main aerial lead and main aerial plug.
Or if it is an internal connection such as an aerial co-ax lead or plug that is at fault,that requires replacing as such !
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Mark's: mapM's Freeview map terrainM's terrain plot wavesM's frequency data M's Freeview Detailed Coverage
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