I dusted off my G2 yesteday. I used a 13" Detech Ultimate coil. I used it directly under a high voltage power lines. It was a little sparky but I was able to run the sensitivity wide open at 100%. The area is old with lots of iron. We stumbled on to it looking for civil war relics. I think it wasn't hunted hard from being directly under power lines. I really forgot how easy this machine is to use. It thrives in iron. The ground is very hot also. We normally use pulse machines to cope with it. My buddy found a 1 reale & a USA button at this area. My best find is a Nova Constellatio coin at this spot. I had iron and buttons come out of the same hole. I think that's cool. Like i said though I used this machine for years civil war relic hunting & know it pretty well.