The best test is in a radio. If tubes light and the radio plays they will be usable.
To test out of a radio you will need a tube tester. They are available on eBay.
Norm
: I have a Bosch 444T and I would like to test the tubes (80,42,6D6,6A7). How can I do this? I don't have enough experience with antique radios. This is my first radio. Thanks.
: The best test is in a radio. If tubes light and the radio plays they will be usable.
: To test out of a radio you will need a tube tester. They are available on eBay.
: Norm
: : I have a Bosch 444T and I would like to test the tubes (80,42,6D6,6A7). How can I do this? I don't have enough experience with antique radios. This is my first radio. Thanks.