Thank you...my amplifier keys and works just fine with the MB1. The real issue is that it won't band track. EE has looked into the issue without resolution. Seems like perhaps a CAT protocol issue. FWIW, I can get my CAT port to talk to my Palstar AT-AUTO. My amp tracked just fine with my old IC-7700 and Yeasu radios.Post is under moderationStream item published successfully. Item will now be visible on your stream.