Shively Labs 6822, Instruction Manual Installation, Operation, & Maintenance

Page: 42 / 78

Connecting the Antenna (8-bay)
34
Install the optional
fine-matching
transformer (if
applicable)
One of the unique features of Shively Labs antenna systems is the adjustable
impedance-matching transformer ( Figure 25 , 73) optionally available with the
antenna. It allows the installer to compensate for changes in the input imped-
ance caused by the installation (tower, conduit, ladder, etc.).
NOTE
The transformer may be oriented in whichever direction you wish (see
Figure 25 ). Make it easy for yourself to reach for adjustment at startup.
NOTE
Transformer mounts are generally similar to feedline mounts and should
be installed in the same manner.
NOTE
You may need to provide a coax adapter between your transmission line
and the fine-matching transformer.
Install the transformer at the input flange of your power divider (62) or
slugged line section (71) if applicable, as follows:
a. Ensure there is an inner conductor connector in the transformer outlet
flange.
b. Attach the transformer mounts (45) to the transformer, close to the ends.
c. Coat the O-ring (54) lightly with O-Lube (supplied with the antenna), then
install it in the O-ring groove in the transformer outlet flange.
d. Mate the flanges and secure the transformer to the mounting pipe. Do not
fully tighten the mounts until the flange hardware is in place.
e. Install the flange hardware kit (53) hardware and secure the flange. Tighten
in accordance with Table 1 on page 1.
f. Tighten the mount hardware in accordance with Table 1 .