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Array Solutions
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(214) 954-7140
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(214) 954-7142
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Super-Flexible Whip Design
V1 shown with heavy duty stainless steel spring
HDS-5 Stainless Steel Heavy Duty Spring List $89
SPECIFICATIONS:
Size: Approximately 2” diameter, approximately 4.65” long
Weight: 2.125 pounds
3/8-24 thread each end, internal braid3/8-24 thread each end,
internal braid
Bending torque: Approximately 9 foot-pounds for a 10 degree deflection
Price $89 buy from our Shopping Cart
Whether you are looking for a great antenna for shorter range mobile use or
a fixed antenna for longer range, then the CHAMELEON V1 HF/VHF/UHF Multiband
Antenna™ is the one for you.
As far as the mobile capabilities of the CHAMELEON V1 HF/VHF/UHF Multiband
Antenna™, the concept is fairly simple. CHAMELEON V1 HF/VHF/UHF Multiband
Antenna™ Super-Flexible whip is designed to maximize the HF wave propagation
from short to medium distances from 0-400 miles (0-640 km) while in motion.
The antenna is designed to be flexible enough to allow the tip of the
antenna to be bent between 45 and 90 degrees. Which means that the vertical
antenna becomes a NVIS (Near Vertical Incidence Skywave).
NVIS, or Near Vertical Incidence Skywave, refers to a radio propagation mode
which involves the use of antennas with a very high radiation angle,
approaching or reaching 90 degrees (straight up), along with selection of an
appropriate frequency below the critical frequency, to establish reliable
communications in a radius of between 0-400 miles (0-640 km).
Although not all radio amateurs have heard the term NVIS, many have used
that mode when making nearby contacts using 160 meters or 80 meters at
night, or using 80 meters or 40 meters during the day. They may have thought
of these nearby contacts as necessarily involving the use of groundwave
propagation, but many such contacts involve no groundwave signal at all, or,
if the groundwave signal is involved, it may hinder, instead of help
communication. Deliberate exploitation of NVIS is best achieved using
antenna installations, which achieve some balance between minimizing
groundwave (low takeoff angle) radiation, and maximizing near vertical
incidence skywave (very high takeoff angle) radiation.
NVIS is most useful in mountainous areas where line-of-sight propagation at
VHF or UHF frequencies is ineffective or when the communication distance is
beyond ground wave (more than 50 miles or 80 km) and less than skywave (300
to 1500 miles or 480km to 2400 km). |
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More simply stated, NVIS communication is most effective for
regional use. It can be used to handle emergency communications or simply
for fun which the CHAMELEON V1 HF/VHF/UHF Multiband Antenna™ is all about! |
NVIS setup from KJ4CSI
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