On Thu, 11 Mar 2004 16:20:57 -0500, Mike Coslo wrote:


Of course I don't know too many people that would want to operate 80
meters with a 1 meter magloop!

Lin, could you put up a larger magloop with maybe a 3 meter diameter?
Still not super, but a lot better. If you do it right, you might be able
to convince the locals that it is an art project!

- Mike KB3EIA -

Hi Mike,

There is certainly no good reason to do it with a 1 meter loop, I will
agree. Others in this group may argue it is more efficient per unit
length (a blighted argument, Lin, take no notice of such claims).
However, the 1 meter size does conform to the commercial units offered
(although not for these low bands for good reason). Barring those
dimensions I suggested be revealed, we can continue.

Your simple tripling does a considerable difference by raising the
radiation resistance to all of 38 mOhms (which if we retain that same
1 inch copper tubing allows for much better efficiency and
consequently success. Care should be taken to observe this value is
roughly 2000 times smaller than the conventional dipole, and as such,
every effort should be applied towards keeping Ohmic losses low.

73's
Richard Clark, KB7QHC