It was unexpectedly hard finding a way to connect RG11 cable (chosen because length of coaxial run is 23 meters) to the TRIA.
I found it hard to find suitable connectors in the local shops and I'm not sure what to ask for via mail-order. For now, I've found a combination involving a BNC-connector that seems to work. One concern is that it doesn't look very waterproof, at least the bayonet part: picture follows,
