Greetings, Decided to clean up some box's of tubes from some ole Motorola and GE radio "strips". Have about a dozen 6146 to test. Got out the trusty I-177B. Doesn't list 6146. Hmm. Dug out the Hickock 799. Wow. It doesn't test em either? Anyone have the settings for this jug for either tube tester? I'd appreciate it. Wally Gibbons