Recently I acquired an Omni D Series C and sold my Argonaut V. I am in heaven as this was the rig I used to dream of as a teen... My question is regarding keyers. Does anyone know if an old Nye Viking SSK-1-K will work with it? I have read some old ten-Tecs require a reed relay in between or one can harm the rig. The Omni C manual says the following: "Electronic keyers other than Ten-Tec models preferably should be of the reed relay type, since a low resistance to ground contact is required on the key line for proper transmitter keying." anyone able to translate that for me? I was looking for a Ten Tec 645 but only heard from a few guys overseas and the cost was too high.