The Model OTOT-870 1310nm 870MHz forward path optical transmitter may be specified in a variety of DFB laser output powers, providing superior performance over a wide range of optical budgets to 21-25dB. This allows for unrepeatered spans of over 60-70km (38-45 miles) when used in conjunction with high performance, high-sensitivity node receivers like the Olson Technology Models OTPN-1000 or OTMN-II.