Binding customs rulings freeze tariff codes for dynamic multi-band radios when subassembly hardware features match exact firmware functional execution state hashes.
FCC Part 15 modular rules allow pre-certified radios in host devices provided shielding, power regulation, labeling, and antenna limits match grant guidelines.
Semicustom wireless module break-even hinges on offsetting upfront NRE and regulatory fees against unit BOM savings across yield-adjusted volume thresholds.
Modular approval requires eight statutory hardware conditions; host integrators must perform spot checking and unintentional radiator evaluation before market entry.
Regulatory certification failure liability depends on linking contract milestone payments and indemnification clauses to accredited lab test reports.
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