Why it matters in the field
Changing apex height, side lengths, feed corner, or loop plane changes pattern, polarization, and feed impedance. A visually triangular wire is not automatically the modeled loop.
Where operators get caught
A loop fed low on a side can behave differently from the same perimeter fed at a corner, even though both use the same wire.
A better field procedure
Lay out the perimeter, mark feed and corners, use insulators that preserve geometry, keep it clear of conductors, and measure after all supports are tensioned.
Connector fit proves only mechanical engagement. Current product instructions, cable preparation, electrical role, weather sealing, structural load, grounding code, and the complete antenna configuration still control.