Rogues Gallery
Following
on naturally from the previous exhibits, this is how one of the
market leaders installs head-ends and repeaters.
The
first shot shows a general view of the head-end. Note the lack
of earth bonding, the lack of any sort of input filters (and believe
me they were badly needed), the rather casual mains connections,
and the carefully installed CCTV modulator – it’s
the white thing on the floor at the middle of the first shot. No, that
object isn’t rubbish, it’s part of the installation!
The
second shot shows the attempt at earth bonding at one of the repeaters.
Would anyone like to calculate the resistance of the path between
the earthing strip and the tray work? This was probably the result
of a ‘communication breakdown’ betweens the TV system
installers and the electricians.
The
third shot shows a satellite tap-off unit that has no visible
means of support. OK, it has. It is supported by the two push-on
‘f’ connectors in the middle of the shot. These connectors
are intended to provide a quick means of making a temporary connection
to an ‘f’ socket for testing purposes. They are not
meant to be used a permanent connector, and they are still less
intended to provide mechanical support. Accidental movement of
the connecting cables could easily cause the ‘f’ plugs
to disconnect. But as we all know, four plastic wallplugs and
four 1½" No. 8 woodscrews would cost maybe ten pence.
Obviously these installers were working to a tight budget.
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