How to upgrade the sonic resonator to the feedback resonator in Subnautica 2

Upgrading the sonic resonator to the feedback resonator in Subnautica 2 is a major milestone in progression. The regular resonator only works at close range, which makes it impossible to deal with bloom cankers that wrap themselves in unbreakable petals when they sense a threat approaching. You’ll need to get a blueprint for it first, though, which takes some digging around, and you also need some intermediate crafting materials to make it.