The Spectera DAD (antenna) takes a cat5/6 cable. Fiber convertors can be used to extend the distance between the base station ant DAD.
Typically, any layer 1 converter that has absolutely no switching in it will work.
Another thing to note is the DAD is powered via POE, so a converter with POE or a POE injector on the DAD side will be needed. When using a converter with POE, please make sure only one convertor with POE is used (on the DAD side), as it could cause port issues if used on the Base Station side.
Below are the convertors that we have tested and works well with the DAD, along with the SFP tested as well.
https://www.lantronix.com/products/m-ge-psw-pse-01-2/ (POE)
https://www.lantronix.com/products/m-ge-t-series-2/
https://www.lantronix.com/products/tn-glc-lh-sm-series/