Cell Phone Booster and Wifi Amp Antennas on Same Mast?

I seem to recall you want to separate antennas by a minimum amount calculated by the wavelength of the band they operate in. 2.4g ISM I think is around 13 centimeters? Cell-phone is kinda all over the place 700mhz to what, 1900mhz? Going for the longest wave, that's roughly 43 centimeters or a little under a foot and a half?

If you have room on the mast to separate them by 43CM, go for it.

There's HAM folk on here that can either confirm this or let you know I'm full of **** :)