I'm making a pcb with GPS and GSM modules. I've found a nice series of extruded aluminum casings that I have designed my pcb to fit in.
I need to have the two antenna connectors on the front bezel of this case, and i was planning to use MMCX to SMA bulkhead cables for this. Then I realized that this would short signal ground to chassis ground though the bulkhead connector.
I'd really rather avoid this if i could, but i haven't found a nice way to do this yet.
It's supposed to run on a 12V12Ah or similar battery, so one could accidentally burn the antenna cable by connecting plus to chassis and minus to signal gnd. :(
Any bright ideas?