amoose136, as one of the betas (and one of the 10) the coils are of a very thin wire(that is quite hard to see without magnification)(seems to be about 0.02mm thick) and custom wound, and the coil impeadance is appoximatly 30-38 ohms in the v1 coils, can not measure the pp29 coils as I could not remove the insulation on the wire of the coil during my attempt at building the pp29