Ham Radio News!
Ham Radio Videos!
HF & Shortwave
RFI Tips and
Support The Site
Vhf and Up
CHEAP AND EASY
2 METER ANTENNAS
Are you interested in ultra low cost 2 meter
antennas that are easy to build using cheap parts; that require no tedious
matching and adjusting; that are almost invisible; that are portable,
compact, quickly assembled; and that can be converted into a
If so read on!
These antennas are somewhat based on the
"V" designs in other projects on this site.
They include the
Ultra-simple wire version in figure 1
Table Top version in figure
The 2 element beam version in figure
Fig. 1 Ultra-simple "wire" version above made on an
Designed for hanging from any handy support and can
be hung from trees, used inside motel rooms or as a "stealth"
Table top "wire" version above using
a dowel or other simple base.
Upper and lower elements must be self
supporting. Use aluminum or copper
reference to the upper insulator in figure
Fig 3. Yagi or Beam version
This is a variation of the designs
By adding the extra reflector element about 16 inches behind the
driven element and increasing it's length to 20 inches each side (5%),
some gain can be realized! According to the article, this version had not
been tested but should work with a bit of experimentation. It's no more
than a standard dipole with a reflector added to come up with a 2 element
yagi with all elements bent forward at a 90 degree
CONSTRUCTION NOTES AND
In all of these designs, please note that the
center conductor from the coax connection is connected to the element in
the "down position". According to the article from which these designs
were taken, this helps in adjusting swr!
Simply change the
angle and or trim each half a very small amount for best swr. Remember on
these antennas that the driven elements have to be insulated from each
other and also their support.
The beam version can
be made in a "T" shape with an insulated boom between the driven element
and reflector and the "T" portion for the support mast. Small diameter PVC
would be a good choice.
You will have to use your ingenuity for the
mounting of the elements to the support so the antenna will maintain the
approximately 90 degree configuration. Experiment.
version of each antenna can be built with all elements either vertical or
horizontal instead of in the form of a sideways “V”.
These designs can
be used from HF up thru 440 or above with a little
Just dig out that old formula you should have learned
for a starting point for the lengths......468/freq = half wave dipole
(driven element) and add 5 percent to the length for the reflector.
spacing should be a little less than .25 wave lengths from driven to
(According to the article, using a director and driven
element arrangement would cause problems with a poor match and the spacing
would be a lot closer.)
Using an MFJ 259b or equal would help with
tuning the antenna for your particular choice of frequency, but if you're
not that lucky, then just use the old swr meter and very low power while
testing. As always, start with longer elements and trim down. It is very
difficult to add length!
DON'T FORGET TO ID WITH
YOU KNOW WHAT WHILE TESTING!
plans have been edited for length and came from a copy that originated
from the America Radio Club, Hialeah, Florida about 13 years ago. The club
is believed to be no longer in operation.
No author or call sign was
listed. We do not take credit for this article or the design, only for the
73 DON N4UJW
Hamuniverse.com uses Green Geeks Web