Abstract: A connector adapted for edge mounting on a circuit board employs a conductive shell with at least one insulating spacer mounted therein. A center contact is mounted in the spacer. The proximal end of the shell has an extension adapted to extend proximally and attach to the circuit board. The center contact and the extension are spaced to straddle the circuit board. The extension is disposed along most of its length entirely to the outside of a reference plane that is parallel to and spaced from the center contact. The extension for most of its length extends proximally beyond any portion of the shell located to the inside of the reference plane. A sleeve lining the shell is polished to avoid reflections of electromagnetic energy passing through the shell. A C-shaped clip is attached to the outside of the extension and then pressed into holes on the circuit board while compressing the clip to squeeze the extension.