Caveat Lector wrote:

All about DF, sense antennas, nulls, etc
http://www.avweb.com/news/avionics/183233-1.html

Side note -- A WWII B-24 bomber (Lady Be Good) ran out of fuel because they
were not sure of the DF readings --that is -- if they were going toward or
away from the home station. Crashed in the Libyan desert -- all of the crew
perished after walking as far as 85 miles in the desert.

On DF antennas sense was always something to be taken with a grain of salt.
It was quite easy to have a reading 180 degrees out. We always had to consider
other factors about the targets such as where the coast was, or where the
last reported position of the target was.

I spent most of my time in the navy as an operator, then supervisor technician ('57 -
'83) with shipborne electronic warfare. After commissioning I was Operations Officer at
two Canadian stations who were part of the USN based Bullseye HFDF system (Wullenweber
Antennae), and then as Operations Officer at CFS Alert, a small sigint/comint station at
the northern tip of Ellesmere Island (300 miles north of Thule). Brrrr.

I went from pre-WW2 DF equipment (Canadian Navy was always a little slow in updating),
to the latest state of the art -- or at least it was in 1983 when I left. It was
a most interesting career. It still is, for the guys who are still in it.

You might find some good information and links on my Oldtimers Website listed
below.

Irv VE6BP

--
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Diagnosed Type II Diabetes March 5 2001
Beating it with diet and exercise!
297/215/210 (to be revised lower)
58"/43"(!)/44" (already lower too!)
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Visit my HomePage at http://members.shaw.ca/finkirv/index.html
Visit my Baby Sofia website at http://members.shaw.ca/finkirv4/index.htm
Visit my OLDTIMERS website at http://members.shaw.ca/finkirv5/index.htm
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Irv Finkleman,
Grampa/Ex-Navy/Old Fart/Ham Radio VE6BP
Calgary, Alberta, Canada