A large emitter array consisting of carefully tuned purified crystals and amplifier antennae, the Crystal Baffler Array is able to shroud half a planet in a near impenetrable electromagnetic cloud. The effects on electronic sensors are a combination of distorted readings, false positives, and ghost returns, while visual scans would indicate nothing but a constantly shifting canopy of multispectral light, the combined effect of which is to prevent any orbital scans across the shielded hemisphere.