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
Tube data cards for the SECO model 107 tube tester. Compliments of Ron Shaw. KC0DKI. seco-107-troubleshooting-chart.jpg: I ran across the page in my grandfathers seco 107 tube tester, which years ago inspired me to start playing with tube electronics. I'd like to submit it in hopes that it may help others with the same tester.