How can I ensure that I am buying the second generation of the sr-A10 antenna? Shawn March 06, 2019 19:36 If your antenna lights up blue, you have the 2nd generation of SR-A10 or SR-A10MM antennas. Related articles ARE YOUR SR-A10 AND SR-2K ANTENNAS MOUNTED THRU THE ROOF? Would the SR-2K antenna or the SR-A10 antenna be a better match for the Stryker 955 and why? Comments 0 comments Article is closed for comments.