Socket ID - and the winner is

rick darwicki n6pe at YAHOO.COM
Sat Feb 27 11:58:25 EST 2010

Little surprise here, the first to ID my mystery socket was

Jim Cross - Vacuum Tubes, Inc

The Y-231 is the same as type SK-740, except the Y-231 is rhodium and  

gold plated for corrosive environments.

The SK-740 accepts types 4CX125C, 4CN15A, 4CX300A/8167, and 4CX300Y/8561

Thanks to all that responded !!!

Rick, N6PE


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