Seal RingChina Factory 380-3800MHz RF Power Tapper 15dB Coupler 4.3-10 Female for Ibs Das Bts Using, Find details about China Directional Coupler, High Power Wideband Tapper from China Factory 380-3800MHz RF Power Tapper 15dB Coupler 4.3-10 Female for Ibs Das Bts Using