I built an RV14A and installed the Archer VOR/ILS antenna in the right wing tip along with an LED landing light, LED strobe, and LED position light and have not had any problems with the ILS (tested the VOR but rarely use since GPS is more useful).
Built and flying RV14A - N14NP
XP400, Dual PMags, G3X System, ThermX Deice
First flight April 11,2017
2018 dues paid