I am working on the dds exciter to replace my protoboard lowfer. This weekend, while waiting for the cover of darkness to do UWL's antenna work, I built this final amp (K0LR's design, of course :) to be placed at the antenna when my exciter is ready. I'll keep the exciter indoors. http://www.nutstreet.net/radio/projects/lowfer/dds/ Eric, KD5UWL