On Fri, 12 Mar 2004 02:59:50 GMT, "George"
wrote:
Does anyone know what antenna technology is used in this product to be able
to develop directionality at such a low frequency with such a small size?

Hi George,

It's called a loopstick, been around for 50 or 60 years now. You can
find one in any pocket transistor radio. They probably gussied it up
with a pair of them for discrimination (driving the left/right
indicator).

If you are in a DF contest, you already have to carry the array, no?
So why carry more stuff? You might want to consider that with a
smaller antenna, your body becomes a bigger source of confusion
insofar as reflecting the signal (something the huge wavelength of
457KHz is immune to).

73's
Richard Clark, KB7QHC