AFL has the longest standing history in vibration analysis. From many years of testing and gathering empirical data, AFL offers Vibrec Online, an integrated Windows®-based vibration analysis program. The program allows users to perform analysis on transmission lines by inputting various mechanical and environmental parameters that can affect vibration. From this information, Vibrec determines how many AFL Stockbridge vibration dampers, Speed-Grip® Spacers, or AFL Bundled Spacer Dampers will be required for each span and suggests the best location for these accessories.