On 08/23/2011 06:23 PM, Larry Gauthier (K8UT) wrote: > They shift the transmit VFO frequency. No tones. > I may be missing something here, but how are the newer rigs generating > FSK ? Are they shifting xtals or just sideband tones ? > > Ed W3NR How do they accomplish shifting the VFO frequency ? From your reply I'm assuming they are using crystals to shift the VFO. Ed W3NR