The Canare NCJ-BCJR 75Ω N to BNC Adapterfeatures a beryllium copper center contact for superior spring performance.
Beryllium copper (gold plated) center contact for superior spring characteristics
1.1 or less VSWR up to 2 GHz
Panel mountable as well.
Note:
For isolation from the panel, use Canare isolation bushing IU-7/16.