On 9/4/06, Zik Saleeba wrote: > > Can I assume that if I use the layout shown in the data sheet that > I'll be relatively safe from EMI? In terms of changing to a lower > frequency switcher I'd really prefer to use a fast switcher in this > case to keep size and weight down. Every gram counts in this > application. Well.. No. It probably won't be a bad layout, but it probably won't be the best one either. The other thing is, will it cause enough noise to matter? If your receivers are at 72 MHz, and relatively deaf as most hobby ones are, then probably not, and you can do some things with ferrites and caps to minimize noise at 72 MHz. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist