The YX026-CEL is an optional upgrade signal (outdoor) antenna for the YX500-CEL which replaces the omni-directional signal antenna with a higher gain directional antenna. This 12 element yagi antenna is used in weak signal areas to improve received signal and/or provide a larger area of improved indoor coverage. This antenna provides 11dBi of gain to strengthen the signal. All hardware is included to mount on masts up to 1 5/8” diameter. The YX699 is a perfect complement in setting the direction of the YX026 antenna.