AJA 1-Channel Single-Mode LC Fiber to 12G-SDI Receiver. FiDO-R-12G offers unmatched flexibility and cost efficiency for 12G/3G/HD/SD-SDI Fiber conversion, allowing for cable runs up to 10 km over standard single-mode fiber optic cable.FiDO converters use a compact, low-profile enclosure that works well in tight spaces around and behind equipment racks, trucks and on camera..