Yes, TV stations that broadcast and Microwave stations should have a lot of equipment that has been hardened against RF frequencies. That should mean that there is some class 3 gold plated material.
Type 1 - 99.7% gold minimum
Type 2 - 99.0% gold minimum
Type 3 - 99.0% +
Thickness classes
Class 0 - 30 micro-inches (.762 microns)
Class 1 - 50 micro-inches (1.25 microns)
Class 2 - 100 micro-inches (2.54 microns)
Class 3 - 200 micro-inches (5.06 microns)
So if you take the class 3 RF shielding you should be finding, and figure out the value, per square inch, you should come up with something like .063 grams of Au per sq inch. Or in monetary terms that should be right around, at current spot prices for Au, $3.45 per sq inch of class 3 RF gold plating.
Scott
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