Quote Originally Posted by mixsit View Post
Think this begs the questions though to sort this out a bit. What is the normal' amount of attenuation vs what you're seeing or expected? (they all show about 15-20 at best- That's significant, but again, compared to what?
In my experience there seems to be much more that 20dB of attenuation. I suspect the polar plots only go down to -20dB as that is enough to define the pattern.