|
General Information
The
antenna can be used at frequencies from 80m to 440 mhz. The antenna will be available with pre-cut sections to work on
20m to 2m, or just the bands that you like best. The tubing can be cut, if
necessary, with a good quality tubing cutter. It
should be filed carefully to make the cut flat, and all burrs removed. Use fine
sandpaper to remove only the burr on the outside of the tubing. The antenna
comes cut to the low end of each ham band. The 20m version of the antenna
should work well with a single set of guy wires at 12 feet. A washer for guy
lines will be provided.
For lower bands, 80m and 40m, you
can use a resonator made by other manufacturers. A short piece of 3/8"
round bar stock, with a one end tapped 3/8"-24, to match to
Hustler resonators. The whip is shortened slightly, for resonance. Simply drop the 3/8" brass
connector into the top of
the second section of tubing. At 12' above ground, this antenna works
better than a 4 foot long base.
Design and Other information
I wanted a
rapidly deployed portable antenna for
fixed-mobile use when traveling or for my field day operations. RV'ers,
field day, campers, even hikers and DXpeditions, will find the antenna very
useful. A Park bench will
work nicely if you have a sturdy clamp to mount the antenna with. Most radios seem
to have tuners in them, so you should be able to get going rather quickly.
This
antenna has been tested and works very well at the maximum signal I am able
to produce, 200W. It is strong enough to
withstand light winds. I have not had it break yet in 20 mph winds. The 20m version of the
antenna should work well with a single set of guy wires at 12 feet.
As with any
portable antenna, it is best to have a good radial system. When attached to
a vehicle, there is some ground effect. However, a simple radial system is
recommended. There are many mounts and portable stands on the
market that can serve as a base for the antenna. For best results, it is
important to mount the antenna a minimum of 4 feet above ground, and have
the radials also a minimum of four feet above ground.
Send Comments or Pre-Order
Please
write to me if you have any comments about the antenna. Also, for the first
run, I'd like to have some pre orders. No deposit, just tell me you want an
antenna, and when they are ready, I will email you to see which frequencies
you would like to use, and then I'll send you a PayPal money request for
payment. a few antennas. I am not sure of the price. I am inquiring about
machining costs and will post the price soon.
Please send email to "rickc@geotool.com".
Thank you for looking.
Rick
WA6JKH
Antenna Mount Home Page
GeoTool Home Page
|
