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Old February 26th 05, 01:48 AM
CW
 
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Pull out your calculator. It's not that big.

"clifto" wrote in message
...
tianli_ wrote:
http://www.cebik.com/wire/horloop.html

The advantage of this type of loop is that it performs equally to a

dipole
on
multiple frequencies.


The main disadvantage is that you could buy several hundred better
performing antennas for less than the first year's property taxes for
the land needed to construct the damn thing!

Yeesh. This makes my jokes about a 30-element MW log-periodic sound
practical by comparison.



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Old February 26th 05, 06:11 AM
clifto
 
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CW wrote:
"clifto" wrote...
tianli_ wrote:
http://www.cebik.com/wire/horloop.html

The advantage of this type of loop is that it performs equally to a

dipole
on
multiple frequencies.


Yeesh. This makes my jokes about a 30-element MW log-periodic sound
practical by comparison.


Pull out your calculator. It's not that big.


Imagine my surprise when my MW loop turned out to be only 1341 feet in
diameter, needing only 33 acres to hold it (41-1/3 if you own the entire
square the circle is inscribed in).

We'd need about 36 poles to hold it half a wavelength, or 1,054 feet,
off the ground.

Maybe we could rent Arecibo... is it big enough?
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Old February 26th 05, 03:25 PM
tianli_
 
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Imagine my surprise when my MW loop turned out to be only 1341 feet in
diameter, needing only 33 acres to hold it (41-1/3 if you own the entire
square the circle is inscribed in).

We'd need about 36 poles to hold it half a wavelength, or 1,054 feet,
off the ground.

Maybe we could rent Arecibo... is it big enough?


I don't think anyone is going to go through the trouble of building a H-loop
for the MW BCB. The original post inquired about the feasibility of a
longwire shaped into a "U". He was almost there by a few yards short of a
better performing horizontal loop.

The point of the discussion, and the links I included,
show that a modest horizontal loop has the same dB gain as a dipole AT
THE SAME HEIGHT. The loop advantage is that the dipole performs optimally
on its fundamental and harmonics ONLY, while the H-Loop performs equally
well on all frequencies at and above about its one wavelength circumference.

Read the links and learn.


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