The RFoF-4.0GHz-1U from RFOptic is a RF Over Fiber Module with Frequency Range 0.5 MHz to 4 GHz, Optical Wavelengths 1310 to 1550 nm, Optical Output Power 0 to 3.62 dBm, (2.3 mW), Noise Figure 6.5 to 23 dB, P1dB -33 to -3. Tags: Rack Mount/Benchtop, Transceiver. More details for RFoF-4.0GHz-1U can be seen below.