I do not know if this works with all radio / KPA1500 combinations however with my K3S/KP1500 I do the following.Hopefully it i something as simple as this. I do not use the ATU in the K3S. Tune the AT

One device in my KPA-1500 failed. Make sure that your firmware is current. If you have a device that failed you will see it in the idle current. If the amplifier is keyed with no power applied, the cu

The idle current for the KPA 1500 is 2 amps. If a device failed then the idle current would drop to 1 amp. Key the amp with no drive and not the quiescent current. One device failed two weeks after I