Question for Itos Hardware

I belong to a senior student group working on our project to improve cell phone reception in Zambia. I'm emailing to ask if ITOS Hardware has 100-ft RG8 Coax Cables (or any 100-ft Coax Cables with 50 or 52 ohms characteristic impedance and a loss below 12 dB at 2100MHz ) we can purchase. We desire to know if this 100-ft Coax is available and how much it will cost us.