Title says it all....this is a 600-ohm to 70-ohm balun 2-30mhz 1800W average 3500W PEP Have the manual (in fact...have 2 of them) Does not appear to have been used at all Make me an offer More items listed from the W7ZXM estate on a basic web page: http://www.n7okl.com Mel N7OKL