Well DavidG, any ability like cloaking or ECM will apply to a stack of satellites.  I must admit that I knew this for ECM and combat sensors and SHOULD HAVE known that a cloaked satellite would cloak the whole stack.  I just wasn't thinking very good just then.  Also I should have realizied that being in the same sector with uncloakedthings (ships/bases) would still have the satellite on the combat screen.
So I am guilty of TWO errors!  That is why it is such a stupid gamer trick!!!  
