I started out with a similar antenna, possibly the same.
is a discussion about my antenna, and the simple spider I made.
I tried different ground planes, with and without the original antenna with the coil.
I already had a pi 3, and i bought the following:
https://www.amazon.com/gp/product/B07BMYSW29 Case, fan, PS.
https://www.amazon.com/gp/product/B013S8B234 Antenna with cable (says 1, but it’s 3 meters)
Amazon.com FlightAware Pro Stick Plus