There are new generic, universal loran antenna couplers available for $130
or so. However, a lot of older antenna couplers and sets are compatible for
mix and match, and are much less expensive. If I have a combo I don't know
for sure play well together, I just try it and see. Never hurt a loran or
coupler doing this. However, some lorans just don't like some couplers.

Has anyone ever seen a matrix or chart that tells loran-to-coupler
compatability? Sure would be handy. If you've run across one of these, it
would great if you'd share it with us. I don't even know if such a critter
exists.