I have two Spark Cores: one with a chip antenna, and one with a u.FL connector. The Core with chip antenna works fine, but I can’t get the other Core to configure.
Is a u.FL antenna absolutely required to communicate, or is the antenna needed just to get any decent range?
How picky is the choice of antenna? I salvaged a u.FL antenna from a broken laptop, connected it, and I still can’t configure the Core.
Is my Core defective?