Quote:
Originally Posted by DavGoodlin
Motorola seemed to use 6BL8's versus the 6GH8/6U8/6EA8. I wonder if there is an interesting story behind tube selection like patent infringements. etc?
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Motorola used a lot of European type tubes in the early 60's. They also went back to 300ma heater strings, in a series parallel arrangement. Many of those tubes were sourced by Amperex. EIA 111.
