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hf shielding
hi
i have a general shielding question i realize that overall it might be a impractical thing to build but looking at it i wonder... ontop of my roof is elevator room it's about 20x20 flat roof lets suppose the motor controller throws out 1.7 to 30mhz at s9+ (all over) lets say i take a single 20x20 sheet of copper put it on the top roof (assume i could ground it if need be) lets say before i put the copper i measured s9 what shielding if any might i see "S" wise?? i understand interference would still be radiating form the rest of the unshielded structure but wondering if measuring ontop of the copper sheeting id' observe any attenuation?? meaning would the signal penatrate that copper? -- and if so around how much??(alot/very little) tnx |
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