Testing RFoF Link for Transmitting HF-OTHR Signal Between Transmitter and Receiver shelters

HF-OTHR site contains two equipment shelters, up to 1 km away from each other, that need to be connected for transmitting FMCW signal. This connection, if realized using coaxial cable, has shown itself to be vulnerable to external electromagnetic discharges, which can damage the sensitive radar equipment. This paper explores and tests the possibility of using Radio Frequency over Fiber (RFoF) link as an alternative to coaxial cable for transmission of signal, in order to ensure the immunity from external sources of electromagnetic interference (EMI).