5881 Replacement for 6L6? - CORRECTION 6L6GB

kd4e doc at KD4E.COM
Sun Nov 18 18:58:44 EST 2007

The 5881 is said to be shorter and fatter but another
AF-68 owner says they fit fine and work well.

Will have to see about swapping some tubes for a pair
of 5881's and perhaps also a pair of 6L6GC's and see
which perform the best.

Anyone interested in some tube swappin'?

> I would definitely use the 5881 pair.  The RCA RC-19 tube manual
> gives the 5881 a somewhat greater maximum rating in both plate volts
> and watts but for "typical operation" and "average plate
> characteristics" the reader is referred to 6L6GB.
> I'm told that the 5881 is a milspec 6L6GB.
> The 6L6GC is the next generation and has even higher maximum ratings.
>  Think of the 5881 as a slightly beefed up 6L6GB and the 6L6GC as a
> major step up.
> 73, Rich KB8TAD


Thanks! & 73, doc, KD4E
Personal: http://bibleseven.com/kd4e.html

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