Post subject: Hickok 550X - need plan to add 9 pin socket
Posted: Feb Mon 05, 2018 6:55 pm
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Joined: Jun Tue 10, 2008 6:06 pm Posts: 642 Location: San Antonio, TX
I have a wonderful Military 550X Hickok tester and would like (need) to add a 9 pin socket or adapter to test 12AX7's, etc. I need to see a schematic, or scribble of some kind to wire in the socket or run a plug from an octal socket to an outboard 9 pin socket. Any one done this? and any help really appreciated.