I finally got around to trying the 950 coil. I said at the beginning that I would be using the 950 but the 5.3 seemed to be a better choice for testing indoors where there is a lot of electrical noise and a lot of metal nearby. Also I did not have a connector to plug the cable into, I just had pins stuck in the end of the cable. It would have been a hassle to switch coils. But now I have a connector, so it was possible to give the 950 a try.
With a constant ground signal present it can ID a penny at 8 inches but not 100% of the time. Without the ground signal it can ID at 9 inches but also not 100% of the time. I don't really have enough gain for impressive air test results, and since I am more interested in performance in difficult ground I probably will not add any more gain.
From the results I was getting with the 5.3 coil I had expected to get a little bit better than this with the 950. I expected about one more inch than I am getting. I think the larger coil is picking up more noise.
Robert Hoolko
With a constant ground signal present it can ID a penny at 8 inches but not 100% of the time. Without the ground signal it can ID at 9 inches but also not 100% of the time. I don't really have enough gain for impressive air test results, and since I am more interested in performance in difficult ground I probably will not add any more gain.
From the results I was getting with the 5.3 coil I had expected to get a little bit better than this with the 950. I expected about one more inch than I am getting. I think the larger coil is picking up more noise.
Robert Hoolko