RF output in sky box - where does signal go ?

[Londoncalling]

Ok , sky dish , input in , great picture all is well :-)

Upstairs I have small flatscreen TV , with digital scanner
built withihn the unit

Ok the extension tv cable i have from downstairs to upstairs
i *thought* would be ideal for attaching to RF output
at back of sky box , for getting somekind of tv channel upstairs
even is its simply a reopeat of downstairs channel

Anyways , zilch , zero , nadda , cant find any channel output
at all

SO these things of back of sky with
RF output 1
RF output 2

what do they do ? if they push out a signal
where can iot now be found on TV spectrum
within the digital band or analogue , common
sense says it should be analogue , if so roughly please
where in the spec should it be

ANy ideas why im picking up silch

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