Giuliano, The KAT100 needs internal signals from the K2 and will not work with other transceivers. 73, Don W3FPR On 9/14/2013 3:47 PM, Giuliano wrote: > I have several RTX not only ELECRAFT, can I use KAT100 with any RTX or > only works for K2? > 73 > Giuliano I0CG > K1, K3