FIN Both loops built-in at top of fin surrounded by wooden shields
Not to scale
F-A Loop. A hugh amount of SWG copper covered
An enormously wire wrapped left to right on wooden forma, in area      P-S Loop
exaggerated drawing screened by wood and not metal. Free flood.      Same as for
to show the VLF receiving      F-A Loop but
aerial      wrapped top to
     bottom in this
     picture.
In nearly five years we had one small
defect on the cathode follower in the
wireless office and no maintenance was
necessary on the loops themselves.
casing level
pressure hull level wireless office
VLF and LF
Receivers