The standard C3 Master, according to the BattleMech Manual (pg. 110) and older sources, includes the functional equivalent of TAG. Pg 112 states: “ C3BS is a variant of standard C3 that functions identically to a standard C3 network. However, the only ECM that can block it is the Angel ECM Suite.” Does that extend to the TAG functionality on a Boosted Master? I would presume so due to the above but wanted to be sure.
