Single frequency interference
There are several different type of interference that cause problems. This page deals with the situation where:
- Freeview reception is perfect or near-perfect most of the time
- Several channels are missing, but they are all on the same 'multiplex'
Local analogue interference
Local analogue interference is caused by household video devices that you can attach to a television such as: If you have any of these devices, you will need to work out which of these is blocking the reception of a Freeview multiplex by turning off the suspect device and then rescanning for channels on the Freeview box.If powering off the device restores the Freeview channels from the blocked multiplex, you will need to either stop using the problem device's RF output by disconnecting the RF output cable permanently, or by changing the RF channel number that that device uses. See, for example, How do I change the RF output channel on a Sky Digibox?
You can find a list of the frequencies that are not in use at your location by putting your postcode into the My Freeview reception and looking under the "Free RF channels" section.
Non-wideband aerial in some areas
In some places you will need a wideband aerial to receive all the Freeview multiplexes. For example in Central Birmingham, the Sutton Coldfield has multiplex D on an 'out of group', so you cannot view Film4 or ITV2+1 without an aerial upgrade.To find out if you need an aerial upgrade, see My Freeview reception.
Help with Freeview, aerials?
Thursday, 19 May 2011
Robin: I think you're going to have to wait for the "power up" on 14th September 2011.
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Jacktar11:07 PM
Birmingham
Thanks Brianist
Yes they are all in the same multiplex and yes I've tried everything recommended but to no avail. As nothing has changed except the signal (still using the same gear as when I could get a signal) I Guess I'll just have to wait for the power-up as well.
Hey btw didn't I see you in that movie "taxi"?
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Jacktar's: mapJ's Freeview map terrainJ's terrain plot wavesJ's frequency data J's Freeview Detailed Coverage
Friday, 20 May 2011
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Robin12:01 AM
Cambridge
OK Briantist, I suppose we can survive the summer without these channels,
cheers
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Robin's: mapR's Freeview map terrainR's terrain plot wavesR's frequency data R's Freeview Detailed Coverage
Robin: You can watch the channels online using the links in the right hand column.
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Jacktar: Yes, I suspect you are going to have to wait until September, but as I said above, you can watch the channels online using the links in the right hand column.
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AlvinF10:12 AM
Birmingham
Hi I must be going daft or blind as I can not find "under the "Free RF channels" section, on the My Freeview reception link as mentioned at the top of the page, as I need to alter the RF output on my Sky+ box. I am at B37 6BT.
Thanks
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AlvinF's: mapA's Freeview map terrainA's terrain plot wavesA's frequency data A's Freeview Detailed Coverage
D
Dave Lusted12:40 PM
I am usaing the Whitehawk Hill Transmitter in Brighton.
During the day all channels on C55 (746.0MHz) are received without problems. However at night all the channels break up or are pixalated. Why does this only happen at night? is there anything I can do to remedy the situation?
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AlvinF: They are now listed on the top right of each page in your "MY SETTINGS" box.
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Dave Lusted: Please see Freeview intermittent interference | ukfree.tv - independent free digital TV advice for some suggestions.
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jas4u4:19 PM
I get STV in Dunoon Argyle but the sound keeps fading up and down every other channel is ok... is there a reason for this ?
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