On Wed, 08 Sep 2010 21:35:19 -0700, Roy Lewallen
wrote:

so either my (and Frank's) calculations are grossly incorrect
or SPAWAR thinks there's a market for such inefficient antennas.

The point I caught, and apparently was not modeled, was the discussion
of antenna height for any particular band. Albeit, such mention was
fleeting, but it sounded suspiciously like half wave, not quarter wave
dimensions.

Aside from that speculation, power specs for military usage are
appropriate for theater operations, not global communications. When I
taught UHF/VHF in the Navy, 10% efficiency was considered perfectly
acceptable as point-to-point communications was the only expectation
and that was rarely as much as 20 miles at best. Experience teaches
that even that only takes 100s of milliwatts.

73's
Richard Clark, KB7QHC