OK Guys, I need a backward duplexer. What "device" do I use to connect the 706 HF/6 Meter jack to two separate antennas? Antennas are built as 70cm/2/6 meter antennas. Not as HF/6 meter antennas. How do I connect it (I know I could use a A/B switch but why)? Thanks es 73, de Jim KG0KP