There have been videos posted showing the board taken out of a CTX coil and E-trak coils attached./working. Check tech section in geotech. I'm not getting very much help from him, probably due to the language differential.
I did get a coil I was going to use, but I discovered a faulty plug (see thread I posted). Too nice of a coil to destroy.
I did get a coil I was going to use, but I discovered a faulty plug (see thread I posted). Too nice of a coil to destroy.