Four checkpoints before a repeatable RF buildManufacturing settings and inspection evidence belong to the approved construction.Four checkpoints before a repeatable RF buildManufacturing settings and inspection evidence belong to the approved construction.01 · MaterialIdentitylot, foil, thickness→02 · ProcessDrillactivation, plating→03 · CircuitEtchfinish, dimensions→04 · EvidenceCoupontest, releaseChoose the supplier guide for the exact grade; generic recipes hide material differences.³Ô¹Ïtv engineering illustration · Conceptual, not a released drawing or measured result