zBoost YX022-CEL 6 dBi CEL Omni-directional Outdoor Signal Antenna Optional Accessory for the Zboost Yx500-Cel 800 Mhz Upgrade Omnidirectional Antenna Provides Stronger 6 Dbi Gain for Yx500-Cel Unit Only Provides Additional Coverage By Boosting Signal Strength to Cover Larger Living/Working Areas 25"L with Bracket Great addition to the YX500CEL Brings stronger signal to the YX500CEL base unit for a larger coverage area