The 29097 is intended to be purchased as a replacement part for the 18285 or to be bulkhead mounted through an enclosure wall. This is a multi-band, omnidirectional antenna for Campbell Scientific 3G cellular modems and gateways. It covers seven popular RF bands, is outdoor ready, and features field diversity with both vertical and horizontal polarization. This antenna does not come with any mast-mounting hardware. A metal ground plane should be provided to the antenna either by bulkhead mounting it through a metal enclosure or with the addition of a metal plate when mounting in a non-metallic enclosure.