> Anyone have a favorite device? Depends how much trouble you want to go to, circuit-wise, power requirements, cost etc http://home.clear.net.nz/pages/joecolquitt/txless.html I use those for, amongst other things, a long-range (15m) outdoor camcorder remote, 5m 2-door sentry and general purpose data comms. If you look through catalogues, RS for example, there are many Rx-Tx diode-detector pairs -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist