The WRT-MON Series monopole antenna is compact, tamper-resistant, and suits applications the likes of wireless vending machines, traffic equipment, and power equipment where space is limited and security is important. Compared to the WRT Series dipole antenna, the WRT-MON Series monopole antenna takes up less space. It requires a proximity ground plane and is available for 2.4-GHz operation. Additionally, it attaches to an 8.5-in, long coax cable with an RP-SMA, SMA, or U.FL/MHF-compatible connector on the other end. ANTENNA FACTOR, Merlin, OR. (800) 489-1634.