A plot of the variation in radiated energy with angle relative to the axis of the radiator. Similarly used for receivers and microphones.



"Dear Dr.Coban and associates; I received my last order for a restoration and transfer and was extremely delighted at the results. The quality of my recordings is now excellent. All "pops" and "clicks" in the original recordings are gone, and I can now listen to my favorite music without being distracted by recording imperfections. Thank you ..."