Quizzes & Puzzles1 min ago
Is It The Weather?
15 Answers
Latey when I record with my humax the programmes are pixelated especially on more 4 movies for men and a few others,this just started lately,could it have something to do with adverse weather conditions any help with this would be appreciated
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No best answer has yet been selected by jordyboy14. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.Sounds to me like you may be picking up two transmitters. Have you checked the SD and HD UHF channels available to you.? You may though be correct, certain weather conditions may indeed be allowing a weaker channel to "interfere", but in your settings you should be able to designate the strongest signal.
Freeview channels are transmitted in 'bundles', called 'multiplexes', with each multiplex using a different frequency. In an ideal world you'd have a different TV aerial to receive each multiplex, so that the lengths of the elements would 'resonate' perfectly with the frequency. However that's clearly not possible, so we use aerials which are only a 'rough match' to each of the multiplexes, inevitably meaning that such aerials are better at receiving some groups of channels than others. Your aerial appears to be poorly matched to the 'COM5' and 'PSB2' multiplexes, meaning that it's harder for it to receive signals from them than from other multiplexes.
Further, different TV tuners (such as the ones in your Freeview TV and the one in your Humax box) have different 'sensitivities' (i.e. their ability to 'pull in' weak signals) and 'selectivities' (i.e.their ability to reject interfering signals). So it's not unusual for one device to be able to get a good picture while another one can't.
Lastly, the strengths of the signals arriving at your aerial aren't constant. They're affected by lots of things, including atmospheric pressure, the number of hours of sunlight (which affects the reflection of radio waves from one of the atmospheric layers), precipitation, solar radiation from flares on the sun's surface, interference from electrical devices in your own home (such as inkjet printers), interference from similar devices in your neighbours' homes, etc, etc.
So it's always unwise to assume that, just because you can get a really good signal on one particular day, you won't have problems on others. The solution, in the vast majority of cases, is to install a signal booster. Major supermarkets often sell them for around a tenner. (Unless one is included, you'll also need a 'fly lead' to go between the booster and the TV set. Supermarkets often sell them too but they're usually available far cheaper from 'discount' shops).
Further, different TV tuners (such as the ones in your Freeview TV and the one in your Humax box) have different 'sensitivities' (i.e. their ability to 'pull in' weak signals) and 'selectivities' (i.e.their ability to reject interfering signals). So it's not unusual for one device to be able to get a good picture while another one can't.
Lastly, the strengths of the signals arriving at your aerial aren't constant. They're affected by lots of things, including atmospheric pressure, the number of hours of sunlight (which affects the reflection of radio waves from one of the atmospheric layers), precipitation, solar radiation from flares on the sun's surface, interference from electrical devices in your own home (such as inkjet printers), interference from similar devices in your neighbours' homes, etc, etc.
So it's always unwise to assume that, just because you can get a really good signal on one particular day, you won't have problems on others. The solution, in the vast majority of cases, is to install a signal booster. Major supermarkets often sell them for around a tenner. (Unless one is included, you'll also need a 'fly lead' to go between the booster and the TV set. Supermarkets often sell them too but they're usually available far cheaper from 'discount' shops).
O_G:
I just did a Google Images search for 'rear humax'. The images I'm seeing suggest that RF loop-through is a standard feature
(e.g. https:/ /www.ra dioandt elly.co .uk/ima ges/hum ax_dtr_ t1000_r earview .jpg )
so, unless Jordyboy14 has opted to receive all of his programmes via the HDMI (or Scart) output, two different tuner units (with differing sensitivities) seem to be in use.
I just did a Google Images search for 'rear humax'. The images I'm seeing suggest that RF loop-through is a standard feature
(e.g. https:/
so, unless Jordyboy14 has opted to receive all of his programmes via the HDMI (or Scart) output, two different tuner units (with differing sensitivities) seem to be in use.
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^^^ Nothing strange about it at all, JB. BBC1 and BBC2 are both on the PSB1 multiplex, which clearly transmits on a frequency which your aerial is well-suited to (whereas it's much poorer at 'pulling in' signals from some multiplexes using other frequencies).
Get a signal booster to fix your problem.
Get a signal booster to fix your problem.
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