On Aug 9, 2007, at 5:29 AM, K2ZR wrote: > What protects the KRX3 sub-receiver from RF overload when it gets its > signal from the unused KATS ATU antenna jack? > 73, Dick K2ZR > The KRX3's aux RX input includes a carrier-operated relay and gas-dicharge tube. 73, Wayne N6KR --- http://www.elecraft.com