Thread: I-177-B Tube Tester
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  #11  
Old 12-19-2010, 06:00 PM
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JohnHacker1 JohnHacker1 is offline
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Guts look healthy! I have an I-177-A made by Munston Mfg. and Service, Inc. Tube chart TB is dated 1946. Was made for the U.S. Army Signal Corps. Works good and is handy for checking older tubes.
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