solarwind wrote: > For example, a very simple 1 MHz AM transmitter is described here: > http://sci-toys.com/scitoys/scitoys/radio/am_transmitter.html Yucc. The crystal oscillators I've seen aren't meant for 9V power. Unless the data sheet explicitly says so, don't assume it will work at 9V. If you believe this bozo's schematic, he's actually running it at 18V, although I think it's really running on a single 9V battery. ******************************************************************** Embed Inc, Littleton Massachusetts, http://www.embedinc.com/products (978) 742-9014. Gold level PIC consultants since 2000. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist