[Elecraft] K3 Receiver Protection

[Jeff via Elecraft]

My station consists of two K-3's, each with a dedicated legal limit amplifier and SteppIr antenna. To minimize interference between bands I am using Array Solutions Bandpass filters. However, if both rigs accidentally wind up on the same band I run the risk of overloading the front end of the opposite rig and damaging the receiver (which I've done once...). Does anyone have a way of taking the band data information and disabling transmit capability on both rigs if they are on the same band? How are others using SO2R avoiding same band transmission and subsequent receiver damage? Anyone have any experience with the Array Solutions AS-RXFEP front end protector?

Thanks,
Jeff Larimore
K0RG