Aerial photography - Ancient Gallery
This
is a vertically polarised stacked pair of 3 element Band III yagis.
Stacking is used to increase gain and to increase directivity,
so it seems odd to stack a pair of titchy little three element
aerials. Normally only multi-element arrays are stacked, although
it could be that this design was intended primarily for loft installation,
where there often wasnt room for an eight or eleven element
Band III array.
In
this example the arrays are connected to the feed point by phasing
bars, angled back towards the mast. Ive no real idea
of the manufacturer, although the pale blue junction box cap suggests
Wolsey. Can anyone confirm or deny this? The photograph was taken
in a part of Sheffield where I would have thought Emley Moor reception
would have been very poor indeed, and this suggests that the installation
pre-dates March 1969, the start of the Sheffield channel 6 ITV
relay. If so it has survived perfectly intact for 34 years. Will
modern aerials last that long, I wonder?
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