CHA F-LOOP 3.0
Page 12
of compatible 3/8
”
antenna mounts
available from Chameleon Antenna
TM
).
10.
Connect the Coaxial Cable Feedline (m) to
the Loop Connection (l).
11.
Secure the Coaxial Cable Feedline along the
Telescoping Mast to ensure easy tuning and
consistent low SWR.
15.
Perform an operational test
(see section on
Loop Operation).
Rigid Radiator Loop Assembly (CHA F-LOOP 3.0 PLUS)
The CHA F-LOOP 3.0 PLUS uses the Rigid Radiator Loop (o) and the small Coupling Loop to improve
efficiency in the 40 to 10 meter ham bands. The CHA F-LOOP 3.0 PLUS antenna should be installed near
the radio set; either indoors or in a sheltered outside area, such as a balcony or porch. Because the
magnetic component of an electromagnetic wave is maximum at the boundary between the ground and
the space above, loop performance is usually best when the loop is located near the ground at a distance
outside of the loop’s close
-in induction field (just a loop diameter or two). The CHA F-LOOP 3.0 PLUS is
not waterproof and must be installed in an area protected from the weather. Do not use an antenna
tuner with this antenna, as it may cause you to mistune the antenna.
Perform the following steps to assemble the Rigid Radiator Loop Antenna, see plate (6).
1.
Select a location to setup the CHA F-LOOP
3.0 PLUS antenna. The location can be
indoors or in an outdoors area protected
from the weather. The location must
facilitate accessibility by the operator to the
Tuning Knob (h). The operator needs to be
able to adjust the Tuning Knob while
listening to the receiver, activating the
transmitter, and observing the SWR meter.
If used indoors, the location should also be
reasonably away from switching power
supplies, Internet routers, and other sources
of electrical and electronic interference.
2.
Remove the CHA F-LOOP 3.0 PLUS
components from the Duffel Bag (v).
3.
Attach the Telescoping Mast (g) to the
Tuning Unit (a) by screwing the bottom of
the Telescoping Mast onto the Telescoping
Mast Stud (q), located on the top of the
Tuning Unit. Tighten snuggly, by gripping the
base of the Telescoping Mast and turning
clockwise. Do not grip the mast tubing or
use tools when tightening.
4.
Attach the small 6 1/2 inch Coupling Loop (c)
to the Coupling Loop Attachment (j), located
at the top of the Telescoping Mast, by
placing the threaded hole in the Coupling
Loop bracket over the Coupling Loop
Attachment stud and turning the Coupling
Loop Adjustment (k) knob until snug. The
UHF connector should be in front of the
Telescoping Mast and point down, as shown
in the inset of Plate (3).
Plate 6. Rigid Radiator Loop Assembly.
