Is the pCom trailer designed for only satellite?

No.  The pCom XL satellite communications trailer is the result of years of searching for trailer system that could be a platform to outlast the components and applications it serves.  It’s strong enough on the roof for up to a 1.8 Meter antenna, has a to tall enough to be a perfect Cell on Wheels (COW) or Cell on Light Truck chassis (COLT).  It’s self powered, heated and air conditioned.  It’s a platform to mobilize communications on a trailer that was purpose designed for that function.