u/Chongulator

All the GPS modules I see for the Core series use an external antenna. (The one with a built-in antenna is EOL).

I'm hoping to run a Core2 or Core3 with GPS that's easy to throw into a jacket pocket so I'd prefer not to deal with an external antenna.

Does anyone have suggestions?

I see they make a plastic frame which goes on their proto module. Would it work to stack 2-3 of those and put a compact GPS inside, wired up via the proto board?