One of our local GE/Ericsson retirees; Mr. 'Buck' Rogers (K4APT) did all the engineering work on this mod, and published it back March 2000, when he was still writing a column for CQ Magazine. Below is the URL link to his website. 35-50 MHz Rangr Mods for Six Meters: http://www.packetradio.com/pdfzips/rngr6mod.pdf 73, Mark C. KB4CVN