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Technical
details of the Hi-Q
NVIS/Combi antenna.
The new NVIS/Combi antenna is
designed around the patented concept of the Hi-QHF antennas.
Two identical H-Q HF antennas
are mounted on a coupler box. This coupler box interfaces to the
feedline and the control connectors.
At a short distance above
ground, for instance on a ground mounted tripod or short pole the take
off angle in respect to the horizon will be high, hence NVIS
performance.
Hi-Q has gone a step further to
enhance the
DX (long distance) communication of this antenna set up BY ADDING a
third
identical Hi-Q HF antenna. This third antenna is paced in a vertical
position, on a 90 degree angle in respect to the dipole. The verical
radiator can be tuned independently of the dipole.
The whole system now works as a vertical radiator with a tuned resonant
radial system. Consequently a lower radiation angle in respect to the
horizon is achieved, resulting in an improved long distance performance.
Deployment time needed for this system is less than 10 minutes. With
the use of a modern HF transmitter and advanced ARQ digital
communication protocols a total independent, light weight and high
performance portable communication system can be created.
Basic specifications:
Band:
Continuously Remotelly Tunable
Frequency:
2-30 MHz
Max input Power:
1 kW
Wind rating:
Antennas will handle 50m/s just fine, further
depending
on the TriPod or mast fixation
Construction:
Type 300 series Stainless
steel or 6061T6 alu.
Polarization:
NVIS plus Vertical
Radiation:
High angle at NVIS, Low
angle at Vertical use
Ground Plane:
Not required, as the ground below
the NVIS
Providing the counterpoise,
and for the Vertical
The
NVIS is providing the perfectly tuned counterpoise.
Sizes, Width and Height: 12'
with CapHat used, 20’ with Caphat and short whips.
Height:
12' plus the
TriPod or mast height.
Weight:
15 lbs to 30 lbs,
depending on the
Hi-Q type.
Controlling/Tuning:
From a simple switch to an
bintelligent
tuner
ALE
systems can be designed depending on the remote control features
of the radio.
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