"Lucky" wrote in message
...

"RHF" wrote in message
oups.com...
Lucky,
.
The Coax Cable {Shielded} Loop Antenna will have a
relative 'small' size an therefore a smaller signal
level; but the relative noise level will be reduced
much lower then the signal level (greater noise
reduction).
.
The Coax Cable {Shielded} Loop Antenna can be rotated /
positioned to help 'tune-out' your local noise sources.
.
The Coax Cable {Shielded} will usually have a better
Signal-to-Noise Ratio then many other larger antennas.
.
The Pre-Amp can be used to boost the lower signal
levels of the Loop Antenna to Hear Radio Signals
that may not be hear with other Antennas due to the
higher noise levels present when using the other
Antennas.
.
.
Two (2) Coax Cable {Shielded} Loop Antennas
for Shortwave All Band Coverage.
.
A single 25 Foot piece of RG8 Coax Cable with PL-259
Plugs on each end can be made into two separate Coax
Cable Loop Antennas :
Cut into a 9 Foot and 16 Foot sections.
.
= Thirteen Foot (13') Loop Element with a Four Foot
(4') Diameter and a Three Foot (3') Feed-in-Line for
a Total Length of 16 Feet. This Thirteen Foot (13')
Coax Cable {Shielded} Loop Antenna is roughly 'cut'
for the 49m Shortwave Band with good coverage across
the 75m, 60m, 41m, and 31m Bands.
.
= Six Foot (6') Loop Element with a Two Foot (2')
Diameter and a a Three Foot (3') Feed-in-Line for
a Total Length of 9 Feet. This Six Foot (6') Coax
Cable {Shielded} Loop Antenna is roughly 'cut' for
the 22m Shortwave Band with good coverage across
the 31m, 25m, 19m, and 16m Bands.
.
Sizing the GreerTech Coax Cable {Shielded} Loop Antenna
for the Shortwave Bands :
http://www.greertech.com/hfloop/charts.html#SWL%20CHART
.
.
RG8 'type' Coax Cable "In-Door" Loop Antennas :
.
* Coax Cable [Shielded] Loop Antennas {GreerTech}
http://groups.yahoo.com/group/Shortw...a/message/1625
.
* Tuning the GreerTech [Coax Cable] HF Loop Antenna
http://groups.yahoo.com/group/Shortw...a/message/1730
.
* Loop Antenna -or- Active Loop Antenna ? ?
http://groups.yahoo.com/group/Shortw...a/message/1394
.
.
iane ~ RHF
. . . . .


I have built my own loop but it's way to big and I have to downsize it. I
used like a 12Ft copper coil with a 1/2" to 5/8" ID
I then bought a 8 Ft by 1" length of PVC tubing and cut side holes the
size of the coil OD or a little bigger on top and midway. Then after
getting the coil as round as possible, I slid it thru the PVC holes I
made. I used a small wooden round peg inside the ends of the copper coil
for separation.

I picked a large air variable capacitor off Ebay and hooked up the coax
using the shielded method from here and from other sites.
http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=9868

This page had good info I used for building one but I made mine round not
square.
http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=9868

And here is great resources for building your own loop:
http://www.dxzone.com/catalog/Antennas/Loop/

I'm going to trim this loop down and hook it up to the 150's socket and
put the switch on "Whip" for the pre amp to kick in. I also have a couple
round pieces of metal that you find in lamp shades to keep them round.
They are usually on the top and bottom part of the lamp shade.

They look and feel great for making a small desk side loop and you can
choose the size you want from a selection from thrift shops that sell old
lamps and shades. One shade can make 2 loops.

I might make a new one but using a smaller air cap and a good rotating
stand for it. I'd pick up a small electric remote control rotator and
leave the loop on the terrace and control it from the room. They are not
expensive.

Thanks for good links RHF. They help give me more ideas so I can
experiment.

Lucky





Sorry for the two same URL's being the same.
Here is the main page I used:

http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=9376

Lucky