The transformer is to break the ground loop of having the computer ground connected to the RF chassis ground of the radio and producing possible ground loop currents. In that case, you defeat the transformer if you connect the computer case to radio case.
The computer case ground should be the 3rd pin on AC plug, and use that one alone for computer. That will correct any voltage difference due to a line filter in computer. Some audio lines are floating, and the transformer gives them a reference known load. The transformer is the way its done in commercial broadcasting to avoid hum problems. Stuart K5KVH _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
