Keith, on the 75174 line DRIVER chips what do i do with the ENABLE pins.? Ground or VCC?? Also what about the unused inputs/outputs... just let them float?? KB8STB Steve -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.qth.net/pipermail/dararepeater/attachments/20160125/ac078206/attachment.html>