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Chassis variations 121 125
Chuck Schwark
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Posts: 1,703
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#2

01-16-2006, 10:40 PM
The 37-10 used 9 tubes. The 37-11 is a 37-10 with the extra tube.
Generally speaking it was not just add a tube, but also changes in components, improvements to a part with a new part number, re-wire a circuit and/or eliminate a component(s), etc.

See this Service Tip from my site:

PHILCO SERVICE HINTS & TIPS - NUMBER 35
Philco Code and Run Numbers Explained


Production Change Notes were issued for these Code and Run Number changes. I provide these notes (when applicable) in the info packets I provide.

The 1938 Tube Manual I have on line only covers up through the 1938 models and may not reflect subsequent Run and Code changes in those models.
Chuck Schwark,
The Philco Repair Bench
[Image: http://www.philcorepairbench.com/images/philog3tiny.gif]
http://www.philcorepairbench.com
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Messages In This Thread
Chassis variations 121 125 - by 49Stude63 - 01-16-2006, 10:09 PM
[No subject] - by Chuck Schwark - 01-16-2006, 10:40 PM
[No subject] - by Ron Ramirez - 01-17-2006, 12:35 AM
[No subject] - by 49Stude63 - 01-17-2006, 09:17 AM
[No subject] - by Chuck Schwark - 01-17-2006, 10:10 AM
[No subject] - by 49Stude63 - 01-17-2006, 10:43 AM
[No subject] - by Ron Ramirez - 01-17-2006, 09:34 PM



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