Fog Signal Distance Finding for Point Sur (1954-1961)

For 2 minutes For 1 minute
RBN Off 52
<––––Code––––>
1
 
1
 
1
 
5
 
  FS Gp of 2 unequal blasts ev 60s
(2sbl-1ssi-3sbl-54ssi)
53
 
 
1
 
1
 
5
 
 
 Shows of dash of RBN or
 blast of fog signal.
Figures show seconds.
RBN Code: