THE DOUBLE BAZOOKA
ANTENNA
Notes on Assembly of the Double
Bazooka
About The Double Bazooka
Antenna
The Double Bazooka Dipole is
a very efficient single band antenna which is very quiet, and does not
require the use of a balun. This antenna consists of coax (RG58) or other
50 ohm type with the shield split at the center and the feedline attached
to the open ends. Do not break the center conductor. With the feedline
attached directly to the two open ends this acts as a half wave dipole
along with the open wire end sections. This double bazooka can be cut for
any operating frequency and is broad banded. It can be mounted as a flat
top or an inverted vee and will handle the legal limit. As an added plus,
it can be operated as a multiband antenna by using a suitable tuner. As
with most antenna projects, get the double bazooka up as high as
possible. Some tuning of the length for best swr may be required and you
can use materials that are easily
obtainable.
Experiment!
Additional construction
information:
(This tip from Jay,
W5IB)
On the cable ends you do not need to use twin lead. You
can make these antennas using a single piece of 12 gauge copper wire or
larger for each end or you can also use ladder line
etc.
I would advise using heavy end wires for strength
purposes. The weakest part of this antenna is at the junction of the coax
and the end wire or twinlead. To prevent the joints from breaking
especially for long lengths, I picked up some 1/2 inch PVC pipe.
I cut
the PVC in half length wize so it would overlap a few inches on the
joints.
Place the PVC at the joints in "splint fashion" and secure with
regular screw hose clamps. Put the clamps close to the ends of the
"splint", tighten snugly and it should take the strain off the joint and
should give a strong joint.
Do this at the center using a " T " support
from PVC or use your own engineering. When designed for the lower hf
bands, this antenna can be a bit heavy since coax is used. It can be
supported along it's entire length with non-conductive cord, rope, cable,
etc by suspending and attaching the antenna from the support cable with
nylon wire ties every few feet.
This relieves the tension and strain
from the center and end
connections.
Save your time and get on time success in cert
killer and examsheets network+ book exams
by using our latest braindumps ccna notes and other superb exam pass
resources of testking lsat sample questions
and testinside act online prep.
Cartoon Copyright/tm
Warner
Bros.
