DefendAir Radio Shield paint is a product that seems intuitive, but I’ve never seen anything like it before. DefendAir Radio Shield is a flat interior paint designed to reduce the transmission of radio waves through walls, ceilings and doors, and the manufacturers are targeting companies that use wireless networks. They claim that the paint effectively shields RF transmissions below 5 GHz.
While this product is meant for wireless network users, there must be an amateur radio application. For example, perhaps the paint could be used on plastic enclosures to turn them into shielded enclosures.
The paint is kind of pricey, though. A gallon of paint costs $70, while a small container of additive (to add to a gallon of your own paint) costs $35.
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