RF/IR wireless (virtual) synapses are critical components of HYDRA (Hyper-Distributed Robotic Autonomy)
neural networks, already discussed in two earlier papers. The HYDRA network has the potential to be very large, up to
1011-neurons and 1018-synapses, based on already established technologies (cellular RF telephony and IR-wireless
LANs). It is organized into almost fully connected IR-wireless clusters. The HYDRA neurons and synapses are very
flexible, simple, and low-cost. They can be modified into a broad variety of biologically-inspired brain-like computing
capabilities. In this third paper, we focus on neural hardware in general, and on IR-wireless synapses in particular. Such
synapses, based on LED/LD-connections, dominate the HYDRA neural cluster.