[FoxHunt] TDOA questions.

[Marvin Johnston]

My first piece of "equipment" was the Handi-Finder, and I found both 
transmitters with it ahead of far more experienced hunters. Using it 
caused others to start using better tools for finding the transmitters :).

One of the problems with a TDOA is that it best works for vertical 
polarization. The other problem is that without modification, there is 
ambiguity in the direction, i.e. it could be either straight ahead, or 
straight in back of the direction the TDOA unit is showing.

ISTR that there is a mod on the HomingIn.com website to allow the 
pattern to be changed to remove that ambiguity.

> I highly reccomend the book 'Transmitter Hunting/RadioDirection
> Finding Simplified' by Robert Moll. I would say this book has the
> information on just about every aspect of amateur radio RDF.

This is a great book, and one I wore out when I first started 
transmitter hunting :). Slight correction, the authors are Joe Moell 
K0OV and Tom Curlee WB6UZZ.

Marvin, KE6HTS