[Elecraft] K3 keying an amplifier

[Fred Serota]

Is there anything about the voltage or current on the keying line that would prohibit putting the K3's key line in parallel with an ICOM's keying line so I would not have to switch between the two when sharing an amplifier?

In other words, could I just use a "Y" connector to connect the two transceivers to the keying line on my amplifier (Alpha 9500)?

Thanks in advance,
Fred, K3BHX