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Old March 12th 06, 07:59 AM posted to rec.radio.shortwave
RHF
 
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Default Something Different - On-the-Fence Loop Antenna for the Shortwave Listener (SWL)

JD,

Something Different - - -
On-the-Fence Loop Antenna for the Shortwave Listener (SWL)

You should first install an 8-Ft Ground Rod at the
Foot (Base) of the new Fence.
Note - This will be the Starting and Ending Point for
your Wire Antenna Element
+ The Mounting Place for your Matching Transformer
{ A Balun = Loop-to-Coax }
+ The Connecting Point for your Coax Cable.

Start by running the Wire Antenna Element out along
the Bottom of the Fence to your Far-Point.

Then a short Wire Antenna Element Leg-Up to the
Top of the Fence.

Next run the Wire Antenna Element back along
the Top of the Fence to your Starting-Point.

Finally a a short Wire Antenna Element Down-Leg
to the Bottom of the Fence.

Mount your Matching Transformer to the Ground Rod

Connect your Coax Cable to the Matching Transformer.

Connect your Two Wire Antenna Element Ends
to the Matching Transformer.

You now have an On-the-Fence Loop Antenna
[ Bent-Around-the-Fence ]

FWIW - Two On-the-Fence Loop Antennas
One Rigged on the Fence along one Side of the Yard
One Rigged on the Fence along the Back of the Yard
Set at 90 Degress and being about 8-ft apart at their
Starting Points from a common Corner can give you
more Receiving Antenna Options.
Note - Separate Ground Rods, Baluns and Coax Cable
Feed-in-Lines are recommended if you choose to use
two On-the-Fence Loop Antennas.

As to the Question of Antenna Wire Size :
# 14 AWG Insulated Copper Wire with 19-Strands
and using PVC Insulation is cost effective and durable.
HomeDepot type - THWN or THHN in 500 Foot Spools

TIP - One of the most important details of an On-the-Fence
Antenna is the Stand-Offs used to keep the Wire "OFF"
the Fence and in the Air. TV "Stand-Offs" with Plastic
Insulator Head and 3.5" Wood Screw base hardware.
RadioShack Catalog #15-853 (4 Pack)
http://www.radioshack.com/product/in...tId=2104003&cp

Other On-the-Fence Shortwave Listener (SWL) Antenna ideas
http://groups.google.com/group/rec.r...nce+rhf&qt_g=1


hope this helps - iane ~ RHF
 
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