Theoretically, you can still buy the CMOS 4 and other Idiom Press products from these guys: https://www.hamsupply.com/cmos-4-keyer/ <https://www.hamsupply.com/cmos-4-keyer/> > I would love Accu-Keyer emulation in my K3s. So would I. In the K3 and KX3 (and KX2 since I’m thinking about purchasing one) Grant NQ5T K3 #2091, KX3 #8342