Hello gentlemen, new guy here. I have a 224-a tube that I would like to test and access to a Stark mutual conductance tube tester model 9-66. Unfortunatly there seems to be no reference to that particular tube in any of the literature provided. Can anyone here help me?
Thank you
Tom

Hi Tom

224A is the old number, globe shape, for 24A. Test it as a 24A. If you don't have that use 35. If neither of these use settings for 36 or 39 with filament reduced to 2.5 volts.

Norm

: Hello gentlemen, new guy here. I have a 224-a tube that I would like to test and access to a Stark mutual conductance tube tester model 9-66. Unfortunatly there seems to be no reference to that particular tube in any of the literature provided. Can anyone here help me?
: Thank you
: Tom

: Hi Tom

: 224A is the old number, globe shape, for 24A. Test it as a 24A. If you don't have that use 35. If neither of these use settings for 36 or 39 with filament reduced to 2.5 volts.

: Norm

:Much appreciated, thanks Norm
Tom
: : Hello gentlemen, new guy here. I have a 224-a tube that I would like to test and access to a Stark mutual conductance tube tester model 9-66. Unfortunatly there seems to be no reference to that particular tube in any of the literature provided. Can anyone here help me?
: : Thank you
: : Tom