On Sun, Dec 8, 2013 at 9:01 PM, Bill Stewart
... The shielding was basically plywood with sheet metal on both sides, with special metal joints in between them and on the corners, packed with wire mesh in the joints to plug any extra leaks, making a nice big Faraday cage. The air vents were metal grates an inch or two deep with zig-zaggy airflow paths, and our data connections used fiber optics going through waveguide holes that were about 3" long and 1/8" diameter. Power feeds used big inductive low-pass filters.
effective attenuation of emanations above 10Ghz would be interesting. even at >5Ghz you run into trouble with the AC filer route as you mention; best practice seems to be DC batteries inside the cage :/ attenuation at high frequencies for air flow mesh less problematic; optical communication links will always be useful of course... i would be curious to see high dBm with high dBi gain emitters(antennas) worst-case testing against actual build outs at
5Ghz, as many designs aim for ~50dB attenuation with 120 (!!!) being beyond exceptional..
Teletronics makes some nice 1W 5.8Ghz amps for 802.11a which could be so purposed inexpensively. best regards,