TESTS CONDITIONS (datasheet)

DUOVAC RADIOELEC 
Va = 250V Vg=-2V Ia=1,2mA  (Va=250V Vg=-1V Ia=3,2mA)


HICKOK TV7D/U 
EV7-6080 B12 B min=32 (65%) 
EV2-1030 B12 B min=32 (65%)

Please note that HICKOK is not a laboratory tester, though it is very well calibrated...
HERE is how I calibrated mine following manual services specifications. I calibrated it to respect the low of the scale for filament... High voltage on filament would damage it...but gives higher values...
0.6 (065-0.72)   -->0.65V ; 1.1 (1.06-1.16)  -->1.14V ; 1.5 (1.26-1.42)  -->1.30V ; 2.0 (1.90-2.10)  -->1.95V ; 2.5 (2.56-2.88)  -->2.77V ; 3.0 (3.25-3.60)  -->3.25V ; 4.3 (4.30-4.75)  -->4.55V ; 5.0 (5.15-5.68)  -->5.49V ; 6.3 (6.20-6.80)  -->6.47V ; 7.5 (7.32-8.10)  -->7.45V ; 10 (9.60-10.80) -->10.03V ; 12.6 (12.1-13.3) -->12.25V ; 20  (19.0-21.0)   -->20.50V ; 25  (25.3-28.0)   -->27.65V ; 35  (35.2-39.0)   -->38.09V ; 50  (51.5-57.0)   -->52.80V ; 75  (74.0-82.0)   -->74.82V ; 117 (115-127)    -->116.5V
If needed, i can share all other tests calibrations I get (129.5V/130V +o-3V ; 41.35V/40V +o-2V ; 4.21V/4V +o-1V ; 56.5V /56V....) 


FRS63023 RT

2 LARGE ARMS CLOSE RING GETTER COPPER ANODES

 1,1mA/1,0mA
(2,7mA/2,6mA)		 45/44



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TUBES ARE QUITE FRAGILE, SO YOU SHOULD PAY A BIT MORE FOR A SAFE PACKAGE THAN A "BUBBLE LETTER". I DECLINE ANY RESPONSABILITIES IF YOU CHOOSE LETTER AND YOUR ITEMS ARE DAMAGED DURING TRANSPORT...