A novel approach known as Force Frequency Shifting (FFS) has been under development for low frequency (less than 1 Hz) vibration excitation of large structures (i.e., buildings, bridges, stadiums, ballroom floors, etc.). Work to date has focused upon modeling, analysis, and evaluation to describe and optimize the system design. This development effort has produced a laboratory tabletop scale prototype utilizing an actively controlled magneto-rheological fluid damper for evaluation purposes. In this work, the low frequency excitation capabilities of the prototype active FFS shaker system will first be evaluated. Secondly, the prototype shaker will be used to perform modal analysis test of a pedestrian walkway with natural frequencies below 15 Hz. The outcomes are used to assess the applicability of the novel shaker system for low frequency modal testing.