SKM 200 Main unit SKS 200 Sub-unit Electrical data: This product is for indoor use only !! Frequency range (TV-IN/TV OUT / MODULE RF IN)……………… (MHz): 47-862 Impedance(TV-IN/TV OUT / MODULE RF IN)………………………(Ohm): Return loss(TV-IN/TV OUT / MODULE RF IN)…………………….. (dB): >10...