[Lowfer] Grounded loops

[Dave Brown]

----- Original Message -----
From: "Ralph Hartwell" <ralph.hartwell@worldnet.att.net>

 If the loop had a "ground" point it would be
> easy to simply earth ground the loop conductor at that point.  Then you
> should be safe from just about everything but a direct strike.

With xfmr fed loops there is no reason NOT to have the loop grounded at one
point.  Mine is fed this way and I can measure virtually no performance
difference on receive or transmit with or without a ground connected to one
bottom corner of what is basically a vertical rectangular loop (fifty feet
long and 25 feet high). I guess ideally it (the ground) should be applied in
the middle at the top or bottom, but  that assumes the loop is far enough
away from other nearby 'stuff' that application of a asymmetrically located
ground will upset near field noise source rejection-- a function of loop
capacitive balance to everything else.
With my loop- just ain't so- it's probably within a couple of feet of just
about everything down the back of the yard- at least at the bottom, and well
up the two sides.  And the upper bit has trees etc all through it. In fact
it's so well dug in down there it's a wonder it works at all- and there
surely is no danger of a lightning strike- too much other stuff higher and
in the way.
 BUT........!!!

73
 Dave
 ZL3FJ
Christchurch
New Zealand