What the operator is controlling
A useful emergency station includes supports, throw line or paracord, the correct radiator, feed line, strain relief, analyzer, power, lighting, and a written frequency plan—not only the antenna bag.
Where people get into trouble
One broadband-looking SWR trace cannot promise that every required path is available. Ionospheric conditions, local noise, terrain, deployment height, duty cycle, and operator practice remain part of the system.
A repeatable field method
Rehearse both guide layouts before the event, label every wire and connection, record a known-good sweep, inspect after recovery, and keep a second communications path when the mission is consequential.
Follow the current guide for the exact CHA LEFS model, radiator, feed assembly, geometry, supports, and operating limits. A family name or mechanical fit does not establish electrical compatibility.
