Jim, If you are using DATA A submode, the K3 will receive and transmit whatever shift the software you are using is capable of. As far as I know, the FSK and AFSK data submodes have only 170 Hz shift. 73, Don W3FPR On 9/22/2011 3:53 PM, Jim McDonald wrote: > Can the K3 receive (or transmit) RTTY shifts other than 170 Hz? > >