I don't think that electrical contact between the covers and the 2-D blocks is intended to be established by the screw threads...It is established by contact between the unpainted inner surface of the panel and the bare 2-D block when the screw is tightened down...If you check one of the black oxide screws with an ohm meter, you will find that the black oxide coating is not a good conductor when compared to one of the plated ZN screws...Anti-corrosion agents on the threads should not inhibit grounding... IMHO...
Jerry, wa2dlg _______________________________________________ Elecraft mailing list Post to: [email protected] 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
