Thread: Sun Spots
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Old June 2nd 09, 08:28 AM posted to rec.radio.amateur.antenna
Sal M. Onella Sal M. Onella is offline
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First recorded activity by RadioBanter: Jul 2006
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"tom" wrote in message
. net...
Sal M. Onella wrote:

Just a guess, but maybe it deals with the Wullenweber [or Wullenwever]
antenna, described here http://en.wikipedia.org/wiki/Wullenweber and
elsewhere.


Actually, unlike Wullenweber, they have multiple concentric rings of
verticals in the array with a complex phasing system. My guess is that
this may have been a contributor to the methods eventually used in
phased array radars. But also something that was an engineering study,
and not necessarily practical.


Our Wullenweber at Hanza had two concentric rings of antennas, the high band
and the low band. And it did have a phasing system to form a beam. The
pattern was very sharp.

Oddly, most of what shows in a Wullenweber photograph isn't antennas, at
all, but the passive screens that give the array its characteristic of
seeing just off to one side. In some photos the ring of monopole antennas
can be tough to spot.

Unfortunately for this discussion, I didn't work in any of the DF shops. I
was in the Comm Shop -- crypto, TTY, telephone & mux maintenance. What I
learned about DF was just picked up along the way.

"Sal"