advice ! freeze frame

[barrykil]

can anybody give me some advice/reason for my problem?
sky picture keeps freezing or no satellite signal displayed, i`ve had engineers out several times so far amstrad box changed for panasonic, software update has been done on it, plus signal strength has been checked on various vists.
Now i`ve noticed that this problem happens only up till about 5pm or some time like that, in the evening its perfectly OK which is weird to me! the dish is positiond in a slight allcove at high level does this make any differance? i live in south london so i would have thought signal strength would not be a problem but this is driving me nuts,any advice would be most welcome.

[Starburst]

I assume there are no obvious means of blocking the signal, ie) windows on nearby buildings or flag poles etc.
Could also be a local microwave source that's used during business hours which would wash out the weak signal from the satellite or I believe certain radio frequencies if powerful enough or close enough could also interfere.

[barrykil]

STARBURST thanks for your input but cant understand why it only happens up untill late afternoon, i`ll just have to get sky back and see what they come up with, thanks

[SportiveUK]

See my post "Sky Digitbox problems...or weird interference" which it probably would have been more useful to append to this thread.

Similar problem which up until recently was only happening during the day. The last week is now any time of the day or night.

Signal strength is fine with no obvious obsticles to block it...I am still convinced it is interference and not a dodgy box.