V15

V15 is the big rectifier tube.

When making pin-to-ground resistance measurements, make SURE the radio is configured like this. To locate tubes, see this.

Early Radio Resistance Measurements

Measurements made with a Simpson 260 type 6 from pin to ground (chassis).

		Pin to        Radio          Radio        Radio
		chassis         #6            #           #

		1             80,000

		2             80,000 

		3               28

		4               30

	

Late Radio Resistance Measurements

		Pin to       From the
		chassis        docs

		1             15,000

		2             15,000

		3               38

		4               40


	Pin 1 to pin 4

	   0.1


	Pin 2 to pin 3

	   78
	

Notes

Reference

Tube pinout images are found on tdsl.duncanamps.com

For reference:

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Last modified: Monday, 1 Jun 2026