SWR and Feedline
The Model 12AVQ-S antenna is designed to
match 50 ohm coaxial transmission line. By
following our detailed instructions and
measuring accurately, an SWR of 1.2:1 or
better at resonance may be obtained. An SO-
239 coax receptacle is mounted in the base of
the antenna for maximum weather protection.
NOTE: If the input terminals of the SO-239
input connector are checked with an
ohmmeter, they will show a direct short.
This
is normal.
Assembly
To become familiar with the antenna and to
simplify the assembly, read through the entire
manual before beginning.
Unpack the parts and check them against the
Parts List and drawings.
Determine where to mount your antenna
(rooftop or ground) and what mode of
transmission to use (Phone or CW). Take note
of the dimensions in the manual. For the
antenna to operate at peak efficiency, these
measurements
must be accurate.
The typical
VSWR chart should help you decide the best
mode for your purposes.
CAUTION
Do not try to adjust one band for Phone and another for
CW or the antenna will not operate properly. All
bands must be set for CW or for Phone.
