Those devices looks like Cellular base station gear. In the USA, your market is very limited as there are very few (only one from my count) IDEN operators: SouthernLINC. They are probably not interested, it appears they are going after GSM these days anyway.
There might be a market for them internationally if there are some IDEN operators in 3rd world countries.
Unfortunately, IDEN is pretty much at the end of the line. It's low capacity, dismal data service abilities, and Sprints abandonment of the last significant IDEN network = End of Life.
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