... is plated for corrosion resistance Product detailsCATV outdoor sub-trunk 2 way tap, 4,8,11,14,17,20,23,26,29dB ... that is plated for corrosion resistance.4 Heavy-duty housing, with waterproof and corrosion prevention design.5 Shielding factor: >110dBApplication CATV ... ≤3.7≤2.9≤2.7≤2.5≤2.5≤2.0≤2.0750~1000MHzdB≤4.5≤3.7≤2.9≤2.7≤2.5≤2.5≤2.0≤2.0ReverseIsolation5~65MHzdB ...