MFJ-270 Lightning Arrester DC-1GHz, UHF-F/F 400W by MFJ

used on my HAM radio antenna system

I sure hope I never have to test this, meaning, I hope my antenna never gets hit by lightning. However, Im happy that I included it on my antenna setup, just the same. Ive had it inline to my antenna for a while now. It hasnt negatively affected performance of the antenna that Ive been able to detect. It didnt change the impedance or SWR either.

Well made and the elements are replaceable