Quote:
Originally Posted by peverett
I have some Motorola 19 inch B&W portable sets. They loved using oddball tubes for some reason, not sure why(except maybe they got cheap prices on them). I also have some RCA sets of the same kind and of the same era, they tube line up is pretty standard, although with series string filiments.
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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?