Pair Kt66 GEC made in england, used but testet good. one have broken key 130euro/pair
Testing data:
Uf=6,3V
Ug1=-15V
Ua=250V
Ug2=250v
For a new tube: IA=85ma and mutual conductance "S" is 6mA/V.
testing results: / Ia / Ig2 / s
first tube / 73,6 / 5,64 / 5.6
second tube / 71,5 / 5.88 / 5.2
osram KT66 50euro.
testing results: / Ia / Ig2 / s
tube / 65,7 / 4,53 / 5.2
Testing data:
Uf=6,3V
Ug1=-15V
Ua=250V
Ug2=250v
For a new tube: IA=85ma and mutual conductance "S" is 6mA/V.
testing results: / Ia / Ig2 / s
first tube / 73,6 / 5,64 / 5.6
second tube / 71,5 / 5.88 / 5.2
osram KT66 50euro.
testing results: / Ia / Ig2 / s
tube / 65,7 / 4,53 / 5.2