CHA F-LOOP 3.0
Page
6
used on frequencies from around 2 to 10 MHz. Frequencies of 2
–
4 MHz are typical at night and 4
–
8
MHz during the day.
A magnetic loop antenna radiates at all angles from horizon to zenith, making it an equally effective
antenna for both local and long-distance (DX) communication. While not specifically designed for NVIS,
during field testing of the CHA F-LOOP 3.0, both DX and NVIS contacts were made on the 30 meter ham
band within minutes of each other.
Parts of the Antenna
The CHA F-LOOP 3.0 is comprised of the following components, see plates (3) and (4):
Plate 3. CHA F-LOOP 3.0 Antenna Components.
a.
Tuning Unit
–
The Tuning Unit adjusts the resonant frequency of the CHA F-LOOP 3.0 antenna.
b.
Flexible Radiator Loop -
The Flexible Radiator Loop consists of a 34 inch diameter / 102 inch
length of shorted coaxial cable with UHF Plugs (PL-259) at both ends.
