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Of course Booty. Both of these devices add reactance into the system. One adds capacitive reactance while the other adds inductive reactance. Reactance is AC or RF resistance and becomes more complex when you account for how phase shifts occur when alternating currents pass through an inductor or capacitor. This gives capacitive reactance opposing properties from inductive reactance even though they are both forms of alternating current resistance.


Now if you take two devices with opposing properties and stack them back to back, what do you have? Essentially you have a cancellation of the effects both devices provide. Both can be used simultaneously on the same antenna, however the loading coil should never be placed higher then half way up the radiator if a cap hat is used. As I recall, the more separation between the two, the better they work.