
CHA F-LOOP
Page 8
Standard Flexible Loop Assembly
The CHA F-LOOP 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 is
not waterproof and must be installed in an area protected from the weather. Do not use an antenna tuner or
coupler with this antenna, as it may cause you to mistune the antenna.
Perform the following steps to assemble the Standard Flexible Loop Antenna, see plates (2) and (3).
1.
Select a location to setup the CHA F-LOOP
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 components from the
Portable Bag (n).
3.
Connect the two Takedown Hardline Sections
(d) together using the UHF Barrel Connector (j).
4.
Connect one end of the assembled Takedown
Hardline Section to the top of the Tuning Unit
(a).
5.
Connect the Faraday Loop (c) to the
unconnected end of the Takedown Hardline
Section.
6.
Connect one end of the Flexible Radiator Loop
(b) to the left Radiator Loop Connection (f).
7.
Connect the other end of the Flexible Radiator
Loop to the right Radiator Loop Connection.
Plate 3. Standard Loop Assembly.