To remove

Remove the inner roof lining. See HEADLINING, 4D, US/CA .
Remove the antenna:
- Remove the bolt (A) securing the antenna.
- Unplug the connector (B) with the help of a small screwdriver.
  
  Fig 1: Illustration For Steps A And B
  Courtesy of SAAB-SCANIA OF AMERICA, INC.
- Remove the antenna (C) by carefully coaxing it up.
  
  Fig 2: Illustration For Step C
  Courtesy of SAAB-SCANIA OF AMERICA, INC.