[Milsurplus] Naval Aviation Navigation

[Unserviceable but Repairable]

> A few years back there was some discussion on BoatAnchors about the Navy
  carrier based system that transmitted different letters for every so many
  degrees of azmuith. 

Mighta been me & I dint elaborate this time.  The AZ/LETTER table of the
day gave a letter for every 30 deg.s of yagi antenna heading - yes we
did copy the Japanese on the antenna.

So you'd pick up letter 'M' every few 10s of seconds while ship-board
yagi spun.  Your day-table said carrier's yagi @ 210 deg.s.  So by
complementing the angle you'd find heading to ship was 30 deg.s (210-180)

Yagi beamwidth less than 30 so unlikely you'd hear but one of the 12 letters
of the day.  And if you got 2, you'd take the louder of two or average.

I'm in awe of the elegant simplicity and code-crack resistancee.

  'rm