Substitutes for 7B7 tube
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Substitutes for 7B7 tube
I am new to antique radio repairs. I was look on Nostalgia in regards to tube substitutions for a 7B7 tube for a Silvertone 7054. I see that a 7T7 tube will work, but I see on some other radio/tube sites that they will not work. If the 7T7 will not work what would be a good sub or replacement. Thanks any help would be appreciated.
frank1956- Member
- Number of posts : 409
Registration date : 2014-06-12
Re: Substitutes for 7B7 tube
Here may be a little more info for your cook book. I see it shows a few more substitutions. http://www.nj7p.org/Tube.php
75X11- Member
- Number of posts : 4453
Age : 64
Registration date : 2013-03-10
Re: Substitutes for 7B7 tube
Thanks. This will help.
frank1956- Member
- Number of posts : 409
Registration date : 2014-06-12
Re: Substitutes for 7B7 tube
As long as you are talking parallel heater a 7A7 will work, but since your 7054 is series string, a 14A7 will work...
In a series string the current(150ma) must match exactly, in parallel it the voltage that's most important...
In a series string the current(150ma) must match exactly, in parallel it the voltage that's most important...
35Z5- Member
- Number of posts : 389
Registration date : 2008-03-12
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