To provide an easy and cost-effective transition from legacy series amplifiers to 1.2GHz Downstream with Mid/High Split. Our solution uses the existing housing and allows for 870/1002/1218 MHz downstream frequency ranges as well as 42/54, 85/105 or 204/258 MHz band-splits. The FM601 Trunk-Bridger module contains a new power supply and is compatible with legacy plug-ins.