CHA EMCOMM II V2
Page 11
Site Selection and Preparation.
1.
Select a site to deploy the CHA EMCOMM II
V2
Inverted “L” conf
iguration. The site
must have two supports that will position
the
corner of the “L” and the
end of the
Antenna Wire at a height of 25 feet. If the
right supports are unavailable, any
convenient objects, such as fence posts or
the tops of vehicles, may be used as a field
expedient
supports
with
reduced
performance.
2.
If not already attached, connect a Carabiner
(d) to the Wire Connector (e) end of the
Antenna Wire.
Connect the Matching Transformer. Refer to
plate (3) for steps (3)
–
(5).
3.
Connect the Carabiner from the Antenna
Wire to the Transformer Eyebolt (j).
4.
Connect the Wire Connector from the
Antenna Wire to the Top Transformer
Connection (h). Tighten the wing nut finger
tight.
5.
If using a counterpoise wire, connect it to
the Bottom Transformer Connection (i).
Tighten the wing nut finger tight.
6.
Connect a CHA RFI CHOKE and coaxial cable
or the Integrated RF Choke end of the CHA
Coaxial Cable assembly to the UHF Socket
(g) on the Matching Transformer.
Raise the Antenna.
7.
Using a Bowline or similar knot, tie the end
of a short length (around 4 feet) of Paracord
to the Carabiner from step (3).
8.
Drive a Stake into the ground closest to the
location of the radio set and tie the
Paracord from the Matching Transformer to
the Stake using two Half Hitches, or similar
knot.
9.
Using a Bowline or similar knot, tie a long
length (50 feet or more) of Paracord to the
Isolation Loop (c) at the end of the Antenna
Wire.
10.
Using a throw weight or some other
method, loop the Paracord over the support
closest to the radio set.
11.
Pull the Paracord and end of the Antenna
Wire over the support.
12.
Using a throw weight or some other
method, loop the Paracord over the other
support.
13.
Pull the Paracord, such that the Antenna
Wire is not quite taut, and secure it to the
support using a Round Turn and two Half
Hitches, or similar knot.
Extend the Counterpoise.
14.
If using a counterpoise wire, extend it along
the ground under the antenna wire.
15.
Perform operational test.
Recovery Procedure
To recover the CHA EMCOMM II V2, perform the following steps:
1.
Disconnect the Coaxial Cable from the radio set.
2.
Lower the antenna to the ground.
3.
Disconnect the Coaxial Cable from the Matching Transformer (a).
4.
Carefully roll (do not twist) the Coaxial Cable.
5.
Untie the Paracord from the Matching Transformer and Antenna Wire (b), as applicable.
6.
Disconnect the Antenna Wire and counterpoise wire, if used, from the Matching Transformer.
7.
Roll the Antenna Wire onto the Line Winder (f) and secure with attached elastic cord.
8.
Pull the Stakes from the ground.
