Hi All.... #1 using personal countermeasures against emanation eavesdropping IS defnitely NOT illegal. #2 So few people have actual experience with Van Eck gear either the ConsumerTronics Model or the Pk Electronics German Device or the version made by a firm in england. First of all Van Eck Monitor Eavesdropping seems to be a deeply shrouded subject even for most engineers and for most c-punks. Its basically a system for reconstruction of the sync signal for monitor radiation received with a standard tuning mechanism... It is VERY similar to various Pay TV Decode Schemes mentioned and detailed in Radio Electronics over the past several years combined with a Monitor and a high gain amplified antenna... VERY specific plans are available from consumertronics for 25.00. And protecting against Van Eck can be extensive as a faraday cage or a subtle as conductive Wallpaper. floors, doors and windows... it really depends on the economic resources of your adversary and how much of a bother you are... Sam Hill p.s. Careful monitor placement if you have A LOT(at least 50) computers/ monitors can use noise data displayed on non-critical monitors to mask emanations of a single monitor where critical data IS handled.. $3-25k spent by a firm on acquiring the technology for internal survey can save LOTS of money from having to Faraday Cage an Entire Data Center... As for eavesdropping on bus/circuit emanation we will take that up at another time