My 7851 on 40 meters - goes into Rig Control Error - When transmitting for 8 seconds. If I hit Tune, everything looks good. - Go to Enable Tx - error messages comes up. Works OK on the other bands Everything works on my IC-7800 I use a RigExpert interface. John, N6QQ n6qq at msn.com 73, John -- N6QQ https://www.qrz.com/db/n6qq