tony sayer writes:

[......] but is there any chance of
getting a reflection of something at the other side or at the end of the
block?
Just wouldn't be strong enough to do that, let along at being just the
right angle etc!...

ISTR that reflection also rotates the plane of polarisation by 90 deg.
Which would confuse these LNB things, because apparently different
channels are transmitted with different polarisations.

I read that this is the reason why you need LNBs with two or more
outputs if you want to have two or more TVs able to receive different
channels at the same time - a single LNB output can be switched by a
single sat receiver to receive differently polarised signals, but it
can't be set for both vertical and horizontal polarisation at the same
time.

Or that's my understanding.

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