I'll try some resistors today > Send them back !!!!!!!!!!!!!!!!!!!!!!!!!!!! I made RS aware of a possible problem on Friday and ideally I'd like them replaced by the correct parts. If they actually exist that is. An email to Block might be quicker and answer questions that RS probably wouldn't be able to > Are they smaller than the Jaycar offering? The Jaycar parts are monsters Block tx fits nicely into this modular system I'm working on http://home.clear.net.nz/pages/joecolquitt/modules.jpg The blue thing, only 14mm high you see -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist