DME
Antenna Development
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The CSIRO
Division of Forest Products assisted by constructing several masts to
the specified standard of warp and twist. They found glue that was resistant
to water and fungus attacks, and established a technique for gluing
under pressure. Several masts were tested to destruction by applying
a transverse load to ensure a safety factor in the event of strong cross
winds. During acceptance tests it was found that the aerial characteristics
(in particular, the input impedance to the aerial) changed during a
rainstorm. Another series of tests was on the effects of snow and ice
on the performance of antenna.
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Left: The final production antenna system on its specially-developed wooden mast. The conical dipoles are the antennas - the antenna-like pole on top of the mast is a lightning conductor. blah blah blah Click here to see a later complete production DME installation
(Photos: CAHS collection) Back to the main Communications & Navigation index |
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