Thanks very much for your replies. To address your suggestions:
I've already obtained one of the bulkhead connectors for semi-rigid coax (Amphenol 82-6096-RFX). However, in the connector I obtained, the center pin doesn't lock into the dielectric and apparently relies on the center conductor...
I have an old 2.5ghz wavecom-type reciever I'm modifiying to accept an external antenna instead of using the stock patch antenna. The reciever module connects to the patch antenna with about 5" of very thin coax (about 1.5mm). My initial thought was to use a readily available panel mount...
