Splitters by Top Signal and Wilson Electronics allow you to equally divide the signal from a single coax cable and send it to multiple destination antennas. (To split a signal unequally, you'd use a coupler.)
Splitting a signal results in signal loss; the more way a signal is divided, the greater the loss to each split. Because of this, we recommend that splitters only be used when you have sufficient signal strength coming from the booster to divide among the multiple antennas.
We can help you determine if a splitter will work in your cell phone signal booster installation. Please contact us and we'll be happy to answer your questions.