On 10/7/14, 4:43 PM, Bob Camp wrote: > Hi > > The output spectrum of some DDS’s is pretty rich. You may find that a 1 GHz DDS can be filtered to operate directly over the 3.1 to 3.4 GHz. > > Oh, clever idea.. Yes.. there is substantial harmonic content, and one could easily arrange to have more. And I've got boxes full of bandpass filters.