Overview
Larsen is a leader in the design, development and manufacture of technologically advanced antenna systems for wireless applications. Larsen has provided mobile, portable and base antennas for two-way radio, public safety and military markets for over 40 years. 

Larsen makes some very nice base station antennas.

While most vendors sell you an antenna and tell you recommended theoretical lengths (probably not correct) to cut the antenna to, I go above and beyond by actually custom tuning each antenna type to work well in the glider frequency range.