Chameleon Antenna CHA MPAS, Руководство оператора

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CHA MPAS Page 10
8. Connect the CHA MIL EXT to the Hybrid Micro
Base by carefully screwing it into the Antenna
Connection until finger tight, see plate (3).
9. Extend the CHA MIL WHIP by unfolding the
sections of the whip, starting with the section
above the bottom section, and ensure each
section is fully seated onto section below until
the whip is fully extended.
10. Connect the CHA MIL WHIP to the CHA MIL EXT
by carefully screwing the 3/8” base stud into the
top section until finger tight.
Extend the Counterpoise
9. Extend the counterpoise wire(s) along the
ground in any convenient direction. You can use
either the Antenna Wire (b) or optional
Counterpoise Kit. The end of the counterpoise
wire(s) can be secured to the ground with a tent
stake.
11. Perform operational test.
Horizontal NVIS
The CHA MPAS Horizontal NVIS configuration, see figure (3), 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. It requires two supports that will enable the ends of the antenna
to be raised to a height of 10 – 12 feet and 60 feet apart. A counterpoise wire, with a length of 50 to 55 feet, is
recommended. If a counterpoise wire is not used, the coaxial cable must be 25 to 100 feet in length, as the shield
of the coaxial cable provides the counterpoise. Use the following procedure to install the Horizontal NVIS
configuration.
Figure 3. Horizontal NVIS Configuration.
Site Selection and Preparation.
1. Select a site to deploy the CHA MPAS Horizontal
NVIS
configuration. The site must have two
supports that will position the Hybrid Micro
Base and the end of the Antenna Wire to be at a
height of between 10 and 12 feet and 60 feet
apart. Higher or lower heights may be used, but
may reduce NVIS performance.
Refer to plates (2) and (3) for steps (2) – (11).
2. If not already attached, connect a Carabiner (d)
to the Isolation Loop (c) at the Wire Connector
(f) end of the Antenna Wire.
Connect the Hybrid Micro Base.
3. Temporarily remove the Antenna Shackle (j)
from the Antenna Connection (h). Place the
Wire Connector from the Antenna Wire over the
Antenna Connection and replace the Antenna
Shackle. Tighten the nut snugly.
4. Connect the Carabiner from the Antenna Wire
to the Antenna Shackle.
5. If using a counterpoise wire, connect it to the
Counterpoise Connection (i). Tighten the nut
(not supplied) snugly.