I received the coil yesterday. Tried it in the test garden. Used Hot program and 28 frequency. Hit silver quarter quite well. But, I thought it did better at 14. Also, did well on clad quarter and nickle. Stable and steady as a heart-beat at 95 sensitive. I did the pumping ground balancing which seem to be better on the targets than the factory 90. I believe it is going to be a great coil. Someone, if you will, tell me when I might want to use another frequency. I had a G2+ and I believe the frequency was 19----something and it seem to hit bullets and buttons good. Thanks.....