I have an application wherein we need to communicate with a PC server from a remote office to our main facility some 24 miles away. We have ISDN service to both sites which communicate back to our main office and thence to each other. Due to the remoteness of the area and numerous thunderstorms which cause downed telephone lines, power failures, etc. it is unreliable and especially so when you most need it.

Has anyone had any successful experience with ethernet radios over long distances? I dont need a great deal of data throughput but it needs to work every minute of every day. Given the importance of seeing the status of the information, money is not a huge factor except fiber optics or other direct wire connection would likely be too expensive. Undetected equipment downtime (especially system wide) is costly.

The ethernet radios they have tried before (with short antennas) are shown here.

The terrain is flat between the two sites. Any suggestions or experience?