Electronic and Relay referring to how the radio is switched from receive to
transmit. As for what it switches internally, I can't remember. Hope this
helps.

Chris
"K7LTF Zach" wrote in message
m...
I have a D104 that i am trying to wire up, and I need to know what the
E & R indications that are labeled on the switch of the mic stand for.

This is the one that has the amplifacation option in it

Thanks Zach