He uses his guitar picks to earn a living, better he destroy a credit card.
Need I mention?
The antenna cable is delicate. Any tiny crimp or bend can ruin it. The snake-like bend you see in the pictures is about as sharply as it can be bent without the inner conductor pressing through the inner insulation. (Its a tiny, semi-ridged, bit of coax.)
The connector is a right-angle connector.
Insert the very tip of a sharp object between the connector base and the bit of metal connector that is slid over the projecting connector hub (stay away from where the cable joins the connector).
Gently work the connector up, off of the pin hub. You may have to "pick" at opposite sides of it to get it to slide up and off.