... 4.Bandwidth 47~862MHz 5.Full C-Band tunable Product description HT8800 all C band tunable CATV external modulation optical transmitter. ... , Its database stores 89 ITU standard wavelength channels ( C band 0.4nm gallery interval ). Users can achieve the selection ... ( NGB ) external modulation optical transmitter. Product features Full C-Band tunable, tunable range >35nm0.4nm interval, 89 ITU channels, ...