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Philco 59c tube substitutions?
Arran
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11-05-2016, 05:09 AM
 I think that I may have found the answer, these two tubes are NOT really substitutes for each other, at least according to the RCA specs I found.

http://frank.pocnet.net/sheets/021/6/6C6.pdf

http://frank.pocnet.net/sheets/021/7/77.pdf

The interelectrode capacities are different Whilst the input capacitances are close, 5 mmf to 4.7 mmf, the output capacities are way off, 6 mmf to 11 mmf. However it looks like a 6C6 is interchangeable with a 6D6, but that doesn't really help here, I wonder if a type #78 might work though?
Regards
Arran
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Messages In This Thread
Philco 59c tube substitutions? - by ccomer1955 - 11-04-2016, 10:48 PM
RE: Philco 59c tube substitutions? - by Arran - 11-05-2016, 05:09 AM
RE: Philco 59c tube substitutions? - by Arran - 11-06-2016, 03:48 AM
RE: Philco 59c tube substitutions? - by morzh - 11-25-2016, 12:30 PM



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