"Telamon" wrote in message
...
In article ,
"Robert11" wrote:

Hello:

Lots of good info on loops from posts. Thanks all.

Just want to be sure re this:

When you talk about a Horiz Loop, you mean a true loop where the end is
connected back to the beginning.

Right ?

(not just a folded random length config with a free end)

Any possible advantages in not connecting it back ?
(Interested in broadband, omni coverage)

The answer to the first question is no. If you connect the ends together
you short the loop. The loop is a circular, triangular or square shape
with one opening in it. At this opening in the loop you can directly
connect coax cable lead-in to the radio so the coax is connected across
the loop gap.

The answer to the second question is no. If you do not connect the other
end to something then the loop is open and will behave as a random
length of wire or a wire antenna. This will pick up signals and a lot of
local noise. The loop connected across the coax will have lower signal
levels and in general will pick up less local noise.

The loop wire routed horizontally will be fairly omnidirectional.

--
Telamon
Ventura, California

As in my above post, an omni horizontal loop is a rarity and occurs only
over a very narrow BW. Don't confuse the fact that the wire runs in 4
directions with making an omni. The resultant far field pattern is a
function of the vector currents in each wire- they add and cancel resulting
in patterns with a number of lobes and a number of nulls, but not omni.

Dale W4OP