**Materials
needed:**

50 ohm coax any length

75 ohm coax

37 feet of wire

To
calculate the length of wire needed for a 11 meter loop
antenna, we must use a formula. Divide 1005 by Frequency
in Mhz will give you length in feet. For example, if
we wanted our loop to receive on 27.555 Mhz we would
divide 1005 / 27.555 = 36.47 feet or 36 feet, 6 inches

Before
we attach this loop to our 50 ohm coax we need to put
a matching section in between the loop of wire and the
50 ohm coax. This matching section is a section of 75ohm
coax.(cable tv coax) To figure the length of this 75
ohm coax This 75ohm section will be a quarter wavelength
of the operating frequency. To get this we calculate
246 Divided by frequency. In this case it's 246 / 27.555
= 8.93 feet or approximate. 9ft. Now we need to figure
the "Velocity Factor" before we cut this 75 ohm piece.
The velocity factor of your coax is .66 or .80. Most
RG-59u is .66 so we will use that. Now take that 8.93
feet from above and multiply that by .66. For this the
answer is 5.89. Or 5 feet ten inches.

**Putting
it together.**

Attach 36ft, 6 inch loop wire to one end of 5 foot ten
inch piece of 75ohm coax. Put one end of the wire on
the shield(braid) of the coax and the other end of the
loop on the center conductor of the coax. Insulate connections
so they do not touch each other.

Now
attach the other end of that 75ohm coax to the 50ohm
coax that goes to your radio. Attach them together just
as you would repair a cut coax. Now hang the loop horizontally
between some structures. Meaning flat and parallel with
the earth. Put it as close to a circle you can get it,
although it will work fine as a square, odd shaped rectangle
or even a triangle. Just getting it up in the air 15
feet will produce significant results no matter what
strange shape. Make sure the bare wire used for the
loop is hanging in free air and insulted from everything
accept the string it is hanging on.

Notes:
I used thin thread like 22-28 gauge wire for the loop
and 15 pound fishing line to hang to loop between 2
trees and one side of my house. It's virtually invisible.
I have compared this loop with antron 99 at same height
and obtained near equal signal reports from DX stations.
In some cases my 99 cent loop antenna will outperform
the antron 99. It stayed up all winter. Many decent
5/7 reports with this 11 meter wire loop.