How the documented system works
Raise the matching transformer to about 25 feet when the site permits, extend the short and long wires in opposite directions, and secure the isolation rings with paracord or visible tent-stake lines.
The boundary that prevents mistakes
The apex height is a guide target, not proof of identical performance at every site. A narrow included angle, low ends, metal supports, or unequal routing can change resonance and radiation.
Use this field sequence
Lay both wires out before raising, attach the coax and suspension line, raise the transformer without pulling on the BNC, spread both legs with slight sag and public clearance, then sweep the installed antenna.
CHA OCF40 User Guide 250513. The exact guide, product state, complete feed path, geometry, and safety limits control. Connector fit does not prove electrical or structural compatibility.
