N.K Wireless Long T-Bracket Mount
Comes with NK0281 (T-Bracket, Long) and NK3179 (Coach's Mount).
When installing, you want the mount perpendicular to the port and starboard sides, so as not to have it on an angle (or parallel to the bow). It should be mounted to where your eyes don't have to move too much so that it does not interrupt your stroke.
Make sure it is also mounted in a spot where there is no overhang or another rower directly above the SPC as to block the satellite signal.