Northern Electric’s “let’s make everything in-house” policy might explain the tube lineup in my Model 5000 Baby Champ.
This is the first post-war five-tuber I have seen which uses a 35L6, rather than a 50L6, in output, along with an 82 ohm, two watt resistor in the heater circuit to soak up the extra 15 volts.
If my 1950’s ninth-grade math serves me better now than it did then, that resistor is being highly stressed. It should be at least 2 and a half watts, and 100 ohms should be closer than 82 to achieve the required voltage drop.
I do know that the carbon resistor runs super hot.
Perhaps Northern Electric also was building six-tube sets with an RF circuit, as many U.S. makers did during the late 1940’s and early 1950’s, and found it more cost-efficient to use one tube in both types of radios.