I also highly recommend having the SMA to BNC adapter. Then you can use a magmount antenna in your car, or a base station like a J pole at home, and then signal stick while portable. The SMA connector was not designed for repeated antenna swaps; size and mass were bigger design constraints for it. The BNC however was designed for repeated reconnects. I use the signal stick and the Diamond SRH77 with a 2m bandpass filter (some locations here have some serious interference issues when doing summits on the air).