>>106645656
it ships with this antenna, which has 2 unshielded wires each poking out opposite each other. It's called a half-wave dipole, because the total length (50mm) is half the wavelength of the tuned frequency (3GHz).

I made a really shitty quarter-wave monopole, which means I have a piece of wire that is 1/4 the target wavelength. 6.9GHz = 43mm, so it's a roughly 10mm piece of wire.