[Boatanchors] 19, 30 & 31 tube info

[Drew P.]

Jim Haynes wrote:

<snipped>

"I know the 30 was a popular type for one-tube regenerative receivers;
I built several of them in my childhood - of course it was an obsolete
tube even then, but I had an obsolete book with instructions for
building the radio."

ISTR Morgan's "Boy's First Book" had regen plans that used a type 30, in the first edition, at least.  Later editions swapped the obsolete type 30 for a 6BF6.

Drew