Toni wrote in part:
Hi Tom,

K7ITM wrote:



The difference is that the helix is quite directional.


The ones used in GPS receivers are exactly the opposite. They should
ideally have a "half orange" radiation pattern, as they should be able
to follow a satellite from horizon to horizon all over your head.

Isn't that quite directional?

And are you talking about helical as in a helical antenna, or are you
talking about rubber ducks?


Before you say this is impossible please think it twice:

Think of the small coupling loop used in a tuned loop. By itself it is
a very bad antenna, but when an appropiate parasitic structure is added
(the whole tuned loop) the "whole system" becomes a decent antenna.
This is exactly what I'm asking about, about using my GPS antenna as a
coupling to a more efficient structure of some kind.


It sounds as if you are proposing something that will be quite
beneficial to the radio world if you succeed.

- 73 de Mike KB3EIA -