... power supply HT8500AC(CATV wavelength)HT8500AU(ITU wavelength adjustable)Standard type CATV 1550nm Externally Modulated Optical Transmitter(47~862MHz, ... is up to 47~1080MHz.Perfect index: Unique innovation technology, provide excellent CNR, CTB, CSO & SBS.ITU standard wavelength ... P/P ratio, provide second-grade users with high quality and high reliability value added service such as RFTV, IPTV, ...