Bkl electrical sma adaptorsconnectors to sma connectoradaptorscouplerssocket bkl 419414 an sma reverse bush to tnc reverse plug adaptor used mainly for applications in the frequency ranges 1ghz to 18265 ghz depending upon the design the plug connector is considered as male and the socket as female depending upon the design of the inner conductor as metallic pin or as metallic pipe bkl 419414 hf adaptor sma reverse bush to tnc plug