[Drake] 6jb6 or Equivalent

[David Drake]

Hi All !

Hope everyone is keeping nice and warm !! (With the exception of you =
snowbirds) !!

I know this issue has been addressed at some point in the past, but I =
missed it and can't find it in my references.  The questions are: Drake, =
as I understand, only sold rigs with sylvania 6jb6 tubes.  What are the =
differences in brands?  I understand they were all made in the same =
Raytheon factory?  If so, why all the caution about re-neutralization?  =
I know it recommends it in the manual, and, I don't have any first hand =
experience with replacements.  Second, What issues are there with =
substitution with 6jb6a's.  If there is a web site that addresses this, =
please direct me to it and I can bookmark it.  I don't need to replace =
mine as yet, and hope I never do, but this has come to mind during my =
restoration of an old Westinghouse shortwave set (tube substituition).

Thanks,

David Drake, Wd9cmd, in Icy cold and nasty southern Indiana.

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