One of our end users owns 16 point-to-point Proxim 4221e Free Space Optical links.
These were purchased new and have never been used. These transmit 100 Mbps of IP data, full duplex, I kilometer (.62 miles) with little to no Jitter or Latency (<1msec). These are great from a security of data standpoint because the beam width is very narrow (6 mrad). Ideal deployments are bank or company branches around a city where high bandwidth and security is important. No licensing of spectrum is needed.
Can you use or find a home for these?
We are currently looking for buyers. Please let us know if you are interested or if you have questions.
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