laboratories

Harmonic comb generators are essential EMC lab tools that produce harmonically-related signals for chamber verification and troubleshooting. Learn why every test lab needs one, how to build a simple DIY version for under $50, and discover the best commercial options with unique features. From measuring cable resonances to portable chamber validation, these versatile devices belong in every EMC engineer's toolkit.

The FCC is moving to withdraw recognition from seven test laboratories in a sweeping enforcement action. This unprecedented step, stemming from new rules adopted in May 2025, marks a significant shift in how the Commission oversees its certification and compliance testing infrastructure.

The U.S. Federal Communications Commission (FCC) has finalized its efforts to ban the certification of testing laboratories that pose a potential threat to U.S. national security.