CHA HYBRID - MINI / MICRO
Page 15
Using the optional Jaw Mount, the Portable Vertical can be mounted on almost any support, such as a camouflage
netting support pole, fence post, picnic table, or the optional Chameleon Antenna
TM
Tripod. The antenna works
better when mounted above the ground, but will provide satisfactory performance if ground mounted. One to
four counterpoise wires, 25 feet in length should be used. They can be quickly deployed and will provide good
performance. The antenna may also be attached to a standard 3/8” mobile
mount on a stationary vehicle. No
radials are required when mounted on a vehicle. An antenna tuner or coupler is required on most frequencies.
Install the Capacity Hat
1.
Follow the procedure for the Portable Vertical configuration, except add the following step between steps (9)
and (10).
2.
Install the CHA CAP HAT between the CHA MIL EXT and CHA MIL WHIP by screwing
the 3/8” threaded fitting of
the CHA CAP HAT into the top section of the CHA MIL EXT and the CHA MIL WHIP
3/8” base stud
into the hub
of CHA CAP HAT.
Tilted NVIS
The CHA HYBRID - MINI / MICRO and CHA MIL WHIP with CHA MIL EXT Tilted NVIS configuration, see figure (7), is a
special configuration designed to provide good NVIS propagation on lower frequencies. It is predominately
omnidirectional and also provides medium range sky wave propagation on frequencies above 10 MHz. You can
mount it on a stationary vehicle which has a tilt-
able 3/8” mobile antenna mou
nt
(not supplied)
or any fixed
support on which you can clamp the CHA JAW MOUNT and will enable the antenna to be raised to a height of
around 10 feet. Using the optional Jaw Mount, the Tilted NVIS antenna can be mounted on almost anything, such
as a camouflage netting support poles, fence post, tree limb, or the optional Chameleon Antenna
TM
Tripod. The
Antenna Wire (b) or a stationary vehicle are used as the counterpoise in this configuration. An antenna tuner or
coupler is required on most frequencies. The following procedure is used to install the Tilted NVIS configuration.
Figure 7. Tilted NVIS.
Site Selection and Preparation
1.
Select a site to deploy the CHA HYBRID - MINI /
MICRO Tilted NVIS configuration. The site must
have The site must have a support that will
allow the antenna to be raised to a height of
around 10 feet and enough space for a
counterpoise at least 25 feet in length. A
stationary vehicle with a tilt-
able 3/8” mobile
antenna mount is also satisfactory.
2.
If using the CHA JAW MOUNT, clamp it to the
support.
Refer to plates (1), (3), and (4) for the following
steps.
