[Elecraft] Pair of K3 in master-slave mode

I wonder if somebody knows of an easy way to make a pair of K3 (both with subRX) work in master-slave mode. In other words I want to tune one K3 and want the second K3 follow. The idea is to have 4 antennas connected to 4 receivers so that 4 directions can be monitored simultaneously in contest

Re: [Elecraft] Pair of K3 in master-slave mode

In theory (I have not tried it), one could send an AI2; command to the Master K3, to enable "AUTO INFO mode 2," then connect the two K3s to each other using a male-to-male null-modem cable (pins 2 and 3 crossed). Then the Slave K3 should track the Master K3. To get a logging program working on Ma