NOTE: This is a repost from my sent file. It didn't appear
20 hours or so after I sent it. Sorry if it's a dupe to anybody.
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"Art Unwin" wrote in message
news:7ce5bd71-d583-433d-88f0-

snip

The navy would not change to a antenna that was not resonant.

Perhaps you are speaking of another country's Navy with which you are
well-acquainted.

Having been intimately involved with US Navy electronics for over 45 years
(active duty 1962 -1982; civilian support in multiple capacities 1982 -
2007) I can tell you that our Navy has numerous shipboard and
shore-establishment antennas that are not resonant. Since flexibility in
frequency selection confers a tactical advantage, broadbanding is far more
important. Tuners and couplers of several designs allow non-resonant
antennas to work well.

The closest the Navy gets to resonant antennas is in some special
fixed-frequency applications, like IFF. Of course, antennas are sized for
the application and will probably exhibit resonance within their band of
operation, but that's not the design goal.