The
Great White North Special Antenna
By Shawn Axelrod
So you live in an apartment or Condo and cannot put out
a longwire to listen to shortwave? Well, why not try the Great White
North Special Antenna.
You will
need the following material:
1) A broken hockey stick (a broom handle will do if you
live South of the 45th parallel)
2) Coated or insulated wire (bare wire will not
do) 20-22 gauge copper or metal stranded or solid it does not
matter. About 100 feet or so should be good.
3) Coax feed line to reach your receiver.
4) Nails or heavy staples tacks etc to secure wire.
5) One alligator type clip
Starting
at the bottom of the hockey stick (we have lots of broken
ones up here so that is easy and cheap to use) secure a feeder
of about 12 inches to the bottom of the stick with nails staples
or whatever you have. This will keep things in place. And give
you a flexible feed point.
Now wind your wire tightly around the stick. Keep the windings
up against each other to insure you get lots on the stick. When
you are about 18 inches from the top stop winding and nail/ tape
the wire in place. You have finished the winding of a coil for
the antenna.
Now run the rest of the wire straight up to the top. Secure the
wire at the top with the nails or heavy staples or what ever you
have. This will form a short vertical.
You can,
if you so choose, coat the wires with a varnish to keep them in
place and stop them unwinding. This will be helpful but not necessary.
You can also wind tape around the winding coil, if you choose.
If you wish you can now pinch a winding and pull it out a bit
to stand away from the stick about every 6 to 8 inches. Gently
strip off the coating/insulation so the wire is showing. This
will form taps on the coil you have wound on the stick.
Attach a alligator to the centre feed of the coax cable. Be very
careful to keep the grounding braid away from the centre wire.
In fact you can tape the braid back so it does not come into contact
with the centre wire.
Feed the
coax to your receiver and use the alligator clip to tap on
the end feed of the antenna or to any tap you created. Experimenting
will show you which tap is best for which frequency and band conditions.
This antenna can be fed to a antenna tuner which in some cases
will be of help. Tuners with amplifiers can be used but in some
situations could cause an overload of signals so tune carefully
and use the amp as little as needed.
The antenna can then be placed on the balcony or pointed out a
window. If you put it out at about a 45 degree angle it could
help so experiment with placement. Keep it near a window to work
best.
To build
an indoor version you can buy a piece of plastic pipe 6 to
8 feet long and wind wire on it. The pipe should be one and a
half to two inches in diameter. You can stand this up in a corner
of the room and hide it behind the drapes near the window if you
wish. This will need more wire but try 100 to 200 feet.
Well there
you go the Great White North Special Antenna is ready to go.
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