Originally Posted by Remi
The best mast will be anyway the Severne recommend mast, so the 530 Blue Line or Enigma 530. It works also with the 490 + extender.
Gaastra have similar curve but not identical.
Hope it will help you
All the best
Ok I have also the opportunity to buy a severne ReflexII 9.7.. Is it compatible with my severne red line 490 (2007) + extention ?