Making a DIY router providing wifi source for photon

I have 4 photons placed in a farm. I need to create a wifi source for this photons to get connected.Dongles and router are available to do this task but can any one help me to make it a DIY. I have seen GSM/GPRS based routers. Now can i make such routers acting as wifi source for photon using gsm/gprs modules and bunch of other modules to make it possible.