To deal with the problem you must clear the channel list completely and then rescan - if your box has it in the menus, please the 'installation menu' to do an initial scan or a reset to factory settings or First Time Installation. You MUST delete the entire existing list of channels. On most boxes this technique can be also be used:
5) do a complete scan for channels - it will fail without the aerial. (This may be in the installation or initialization menu, and is distinct from any 'add channels option'). Once this is done your channel line up should be empty;
6) reinsert aerial by reconnecting to the 'RF in' connection;
The Freeview channel line-up provided by six "multiplexes" - each of which carry five or more TV channels, radio channels, text services and EPG data. In this diagram each ROW represents a multiplex. If you are still missing a whole multiplex (ie everything on the row) you may need to replace your aerial with a wideband type, purchase a larger aerial or you may have interference from a VCR, games console, Sky Digibox or similar.
Ronald J. Beaton : Indoor aerials no matter of what the brand might be are seldom ever satisfactory, as all of them are vulnerable to fluctuations in output caused by them reacting to the capacitive effects of movements within the room, or even movements in adjoining rooms whether or not within the same property, fluctuations in output levels showing up in a more severe fashion in aerials advertised as being fitted with a built in high gainamplifier, hence why aerials of the latter year variety can sometimes perform better.
Purely out of curiosity, what like is the reception on your main TV if you try swapping the two indoor aerials over? as another aspect about these high gain indoor aerials is that some of the gain is achieved by designing the aerial to have a narrow pick up angle, needless to say this making them even more vulnerable to movements within the room, or indeed even in the angle the signal is being received at.
However as far as the 4G aspect is concerned, although these aerials do have a built in filter to attenuate reception above C60, the area used by 4G transmitters, there is an element of this aspect being used as a sales gimmick by some aerial manufacturers in a similar way as during switchover from analogue to digital aerials were seen advertised as being for "digital" reception, or even "digital compatible", when in actual fact all aerials are, aerials being capable of receiving signals of any mode provided that the transmission is at a frequency within the range that the aerial is designed to operate on.
Channels blank, re-tuned then missing many channels. 2 days ago few channels were black screen, I re-tuned and now have only 37 channels, many are missing such as pick,dave,5 usa +1 channels. Never had any problems for 2 years (isle of wight). Have tried the unplug, take out arial, tune & re-tune but have same channels missing.
recently i posted a problem of my picture using an out door aerial and the breaking up of my picture on freeview...but i hadnt noticed that the next door neighbour recently installed a sat .dish right next to it,could this be the problem for my freeview picture breaking up all of a sudden thanks
m.whitbrook: David Lindsay pointed out on the 12th January that you very close to the transmitter, hence your problem is almost certainly to do with too high a signal. You need to sort that out, which is easy to do.
THANKS MIKE B but its ok in the summer months .it only seems to happen in the winter time..but if its east to correct because of it near to transmitter were do o move it and i cant afford to get a fitter out to it
m.whitbrook: The summer months tend to have tress in leaf, the winter does not, which might explain why the problem is worse in winter.
If you'd simply follow the advice on the page 'too much of a good thing', you dont need to pay anyone. You just need an attentuator to kill the signal a bit, which cost less than two pounds each on Amazon.