On Dec 9, 11:01 am, thedeerhunter270
wrote:
I think it's to do with ABBIE

http://dlr.thexhunters.com/info/janet_routes_1.jpg

Not sure how - but I think aircraft fly north towards ABBIE then
somehow establish their position from some another source. Is there
another NDB somewhere that could be selected to triangulate? The
Basecamp NDB could be too far away

I guess you use a loop for DFing NDB's?

I have two ways to locate ndbs. One is a Bendix 555 marine rdf.
However, I found a relatively small copper pipe loop (square, 1 ft on
a side) with a wellbrook ala100 works much better. I have it set up so
that I can place a compass on it. When I did the original DF, I had an
impromptu loop made out of wire mounted on a paper plate. Yeah, very
improvised.

You realize there is nothing on that route diagram that can be
verified except for the bty based waypoint.