Pair of RCA Radiotron type 43 vacuum tube 
Tested with a calibrated TV-7D/U tube tester.
Calibration by Daniel Nelson.

Tested at: 87 92

Average new: 83

Minimum good: 50

The minimum is equal to 65% of the life of the tube.

Tested for shorts and gas.
Matching date codes: Y6

NOS/Used: used

Construction: gray plate foil getter

Glass:  clear

Base: tight

30-day free return. 

Your items will be packed very well and shipped promptly.

We combine shipping on tubes.

Always glad to answer any questions.

Thanks for looking!