Aerial photography - Ancient Gallery

The
log periodic aerial is a strange beast. Click here for a bit of background
information.
This is the Antiference TS21. As far as I know this was the first
log periodic aerial on the UK domestic market. The ‘TS’
stood for ‘trouble shooter’, and the aerial was marketed
as an anti-ghosting miracle. There’s no doubt that there
was a niche for this product, and I used quite a few. Like all
log periodics, the gain was nothing to write home about, but the
sharp directional properties could be very helpful under some
circumstances. Log periodics have a twin boom that also serves
as a transmission line, and in this case the two halves were held
together with a long insulating strip. The support arm was non-conductive,
and there was a feeder cable with connector attached, rather like
some non-domestic products. This feeder was supposed to be stretched
tight from the rear of the aerial to the bottom of the support
arm (it had a stranded inner and thus was able to withstand repeated
movement), not taped to the boom as seen in this example. Aware
of the poor gain Antiference brought out a version with a built-in
masthead amplifier. The TS15 was also available. This covered
channels 37 to 68 only.
Come on Antiference, let’s have the new improved version
of the TS21 on the market for wideband digital use!
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