RadioBanter - View Single Post

June 22nd 04, 08:49 PM

From: (Mad=A0Dog)
I agree as well, a properly engineered single

102" will outperform duals anyday.

Most truckers don't understand how and why

antennas radiate RF energy and they run

duals because they give a balanced look, as a

bonus co-phased antennas tend to

supplement each other on vehicles with plastic

or fiberglass bodies. The fact is that the trailer

blocks a majority of the RF that co-phased

antennas provide to the rear so they end up

with a system that transceives mainly to the

front.

The exception to the rule would be a flatbed

trailer. I use a 102" whip on my T2000 which is

mounted to a flat bar attached to the frame

that extends past the edge of the trailer which

allows the antenna to "see" behind the trailer.

The antenna is supported roughly 6' above the

mounting point using a custom made

plexiglass bracket.

I have also attached 2 braided steel cables to

frame which drag the road during travel and

supply a make-shift earth

ground when parked.

I will be flat honest with you and say that this

system gets out farther then i care for

sometimes.

It also works well for sky-wave propagation

when conditions permit. My 4x4 truck uses a

pedestal mount 102" whip and a 24" x 24"

sheet of stainless,

Congratulations. The "Richochet Skip Dish" has been used for years on
vehicles around here,,practically standard fare on many pickup trucks
'round here. And you're right, it makes one hell of a difference,,,it
gets up and out,,,,.since you have a 4 X 4, pull that bad boy into some
water, like on the edge of the lake or on a beach. Add a Leece-Neville
or two and you're humming.

_
the pedestal is mounted to the floor of the bed

1.5' behind the cab and cut to length with the

top of the bed, the stainless sheet is

sandwiched between the top of the pedestal

and the bottom of the antenna. Very powerful

system using a highly tuned 25 LTD

Mad-Dog

Nice set up for any eleven meter activity. Attaching the mast and
Richochet dish to a steel toolbox is also another popular method. Copper
strap as a ground is preferred instead of wire because of differing
inductance value.