Complex sentence: Some communities have retired fire horns as outfitting individual volunteers with pagers or radios has become technologically and economically feasible; however many horns have been maintained as a redundancy and out of tradition.
Split into simpler sentences: Some communities have retired fire horns as outfitting individual volunteers with pagers or radios has become technologically and economically feasible. However, many horns have been maintained as a redundancy and out of tradition.