Tubes are identical in construction
Tested with a calibrated TV-7D/U tube tester.
Calibration by Daniel Nelson.
Code: cf JDY, fj AAL
NOS/Used: new
Construction: gray plate round getter
Glass: clear
Base:-
Tested at: 82/40 plate current 9.5/18.2
108/49 plate current 12.7/22.2
Average new 85/37
Minimum good 50/22
Tested for shorts and gas.
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!