Fred, it is one booster and an upgraded antenna kit that contains two square uni directional panels..one for voice one for data. The panels have a special coax splitter.
Here is where I bought my zboost and the model number. The antenna I use is the dual square array. I mount it to one of four five foot sections of 1.1/4 inch white pvc pipe coupled together with a cap on the top section. I rest the pipe on the ground and tie wrap three sections to my ladder, climb up on the roof with the last pipe and couple it to the rest...piece of cake. Check out the three bought together images.
Z Boost cell repeater