[time-nuts] More on Old Loran

[Hal Murray]

Lots of good info on hyperbolic navigation aids
  http://jproc.ca/hyperbolic/index.html

In particular, this is a nice description of Loran A
  http://jproc.ca/hyperbolic/loran_a.html

Here is info on how a Phantastron works.  It may not make much sense if you 
don't know how tubes work.
 http://www.radarpages.co.uk/theory/ap3302/sec2/ch8/sec2ch8p137.htm
(Figure 3 is on the next page.  Follow the link at the bottom.)


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