Nope. A Stationmaster is basically a series of stacked 1/2 wave elements giving you all kinds of gain. You can make one out of coax and PVC pipe. Here is a design by my friend Mike:Anything work as good for omni directional use as a stationmaster on MURS?
http://www.repeater-builder.com/antenna/wa6svt.html
I spent time with Mike and watched him build another antenna for his club's 220 repeater that is still in use to this day. The guy is amazing!
This would also work for CB if you make the radiator 75' tall.