I have ndcruz's 3.818 V1 that I modded for color. Today I was driving around with it to make sure everything works right but I noticed that it is pratically blind on X and K band. If I remember right it's these older models that go easily out of tune. It seems like Ka is fine and from what I know that is normal for it to still be good. Let me know if my memory is serving me right or if my mind is gone.