Blake: It is just a current balun made from small teflon coax wound on a torroid core. Want to see a picture of the inside ?? Go here: http://www.qsl.net/ve6wz/CCbalun.htm De steve ve6wz. http://www.qsl.net/ve6wz > Anyone that would be able to share what's inside of one? > > tnx, 73 > Blake N4GI