Looking for a dual band omni with 5ghz and 2.4ghz layers and two radio feeds one for each frequency to be used simultaneously. I want this for single pole masts where we want omnidirectional coverage in 5ghz and 2.4ghz on top of one single pole type mast.

Has anybody seen such an antenna? I can't find one like this! Or does anybody know how a dual band omni would perform with a single feed using a splitter and two radios simultaneously? Something tells me that wont work?