This is the BAMA archive. These manuals are available for download and free of charge.
I am now accepting new manuals for inclusion in this archive. Contact and submission information below
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Manual for the Hickok 539B Transconductance Tube Tester. There is an error In the schematic around the bias meter circuit. Please compare with the 539C drawing for comparison. The schematic has not been changed. It is exactly as Hickok printed it. Compliments of Dave Meyers.