12-15-2009, 11:21 PM
Philco 40-180 Schematic help.
Schematics downloaded for this Philco 40-180 do not agree with what is in my version of this radio.
Downloaded schematics show an 8 tube model with this tube lineup:
1232, 7J7, 7B7, 7A6, 7C6, 41, 41, 84
What I have is:
1232, 6J8G, 7B7, 7C6, 41, 41, 84
Grillcloth.com has a radio finder feature that seems to indicate that the 7J7 and the 6J8G are interchanged on this radio (per Howard Sam's Red Book - 1st edition).
But these tubes have such different pinouts that the schematics have to be radically different.
7J7 pinout:http://www.nostalgiaair.org/tubes/7j7.htm.
6J8G pinout: http://www.nostalgiaair.org/tubes/6j8g.htm.
Does anyone know where the proper schematic can be had for a 40-180 that uses a 7 tube line-up with a 6J8G in use?
Schematics downloaded for this Philco 40-180 do not agree with what is in my version of this radio.
Downloaded schematics show an 8 tube model with this tube lineup:
1232, 7J7, 7B7, 7A6, 7C6, 41, 41, 84
What I have is:
1232, 6J8G, 7B7, 7C6, 41, 41, 84
Grillcloth.com has a radio finder feature that seems to indicate that the 7J7 and the 6J8G are interchanged on this radio (per Howard Sam's Red Book - 1st edition).
But these tubes have such different pinouts that the schematics have to be radically different.
7J7 pinout:http://www.nostalgiaair.org/tubes/7j7.htm.
6J8G pinout: http://www.nostalgiaair.org/tubes/6j8g.htm.
Does anyone know where the proper schematic can be had for a 40-180 that uses a 7 tube line-up with a 6J8G in use?
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