On 4/22/2015 5:33 AM, embedded systems wrote: > White band saying DC-3GHz ? > It will have different inputs for Lo (max 50MHz or so) and Hi. > On LO will be simple amplifier/comparator with or without filter. On HI > will be an amplifier followed by a RF divider. I suppose the conclusion would be that you need to analyze the signal with a spectrum analyzer to know that it has one main component, followed by a frequency counter to precisely measure the frequency. - Martin --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .