A 2.5-Gb/s CPFSK four-channel FDM transmission experiment has been conducted with a 150-km-long nondispersion-shifted fiber. This system employed a wideband channel space controller, a common ...

Tree roots are sensitive but tougher than expected. They just need appropriate care. ... Studies have found the ratio of root radius to trunk diameter (at breast height) to be about 38 to one.