Panel planning for IFR. I am not instrument rated but planning on using the RV9 for my IFR training. Question - Is the VOR required or can you get your IFR ticket with the 420W without the VOR in the 430W? The reason I ask is I closed out the vertical stabilizer not sure how to install the antenna short of removing the stabilizer tip. That got me to thinking is the VOR necessary for IFR if you have the 420W?