Abstract: A structure for concealing and/or camouflaging emitters and/or receivers of electromagnetic radiation such as, for example, telecommunication antennas is disclosed. The structure may be formed from a panel comprising a light weight, substantially RF transparent poly-vinyl-chloride (“PVC”) foam material. The structure can be fabricated in many ways and in different configurations to hide a variety of telecommunication antennas such as, for example, cellular, omni, and PCS antennas. The structure can be used in varying configurations and sizes. Configurations of the structure can be glued, bolted, and or screwed to itself or other substrates that do not impede RF signals while maintaining different overall appearances, textures, and shapes to hide or camouflage the emitters and/or receivers of electromagnetic radiation.