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B&K 550 Tube Tester

 

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An excellent mutual conductance tube tester for tubes from the mid 1930s - 60s. Complete with the manuals, set-up charts and the B&K 610 adaptor that expands the types of tubes it can test. It's only negative is it cannot test the early large pin tubes of the 1920s & early 30s or the newer tubes from the late 1960s & 70s (compactrons etc). Some of those tubes could be tested if you can fabricate a suitable adaptor.

Year: 1959
Case: canvas covered wood
Type of test: mutual conductance + good/bad scale


< available, reprint B&K Service & Instruction manuals available
 
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Instruments has been SOLD, photo reference only
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