Optical fiber data link
Model 274 Si-Fi, single-fiber modem/line driver doubles the capacity of installed fiber-optic cables. The data link supports synchronous data rates to 256 kbits/sec, or asynchronous rates to 38.4 kbits/sec. It operates to 2.5 km and is packaged in a 5ٳ.5ٷ.3-inch case. The link costs $425.
Telebyte Technology Inc.