Author name: David Kowalski

David Kowalski is a tech product reviewer and consumer electronics analyst who has evaluated over 500 signal-blocking and privacy products. With a background in electrical engineering from Purdue University and five years writing for tech review publications, David brings a spec-first approach to FrequencyBlockers. He breaks down shielding effectiveness, material construction, and real-world durability using aggregated user review data, manufacturer specs, and independent attenuation testing standards. He does not make experiential claims, instead relying on verified buyer consensus and measurable performance data.

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