Rick, It is a low profile PC Mount BNC connector. Elecraft p/n E620075. See the parts listing in the T1 assembly instructions for a small photo. It is also used in the KX1. 73, Don W3FPR On 1/21/2018 2:17 AM, Rick McGaver wrote: > Is the BNC connector used on the T1 tuner standard pcb mount? > Rick. NK 9G