FIELD: measuring equipment.
SUBSTANCE: invention can be used for antenna measurements in an unadapted room. Invention presupposes that facing material, made in the form of a structure based on cardboard coated with carbon-containing compound, characterised by the fact that it is made on the basis of corrugated cardboard cells for placement of hen's eggs, and, as the carbon-containing compound, there is used is a mixture of finely dispersed carbon, received by SHF pyrolysis of methane, and zapon in the ratio from 1:8 to 1:12, at that, the surface density of the applied carbon is from 30 to 50 g per square metre.
EFFECT: lower labor input and reduced cost of material.
1 cl, 2 dwg
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