Trying to identify this connector. Outer diameter 16,3mm. It is a bit bigger than a N-connector. And it is not a 7/16" .
Welcome to the Digi-Key Technical Forum community. Would you mind showing pictures of the entire product? It may help if I can find some information on that.
Please make sure all markings are visible and legible.
Do you know what the Impedance and Cable Group are for this connector?
Should be 50 ohms