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Substitutes for 7B7 tube

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Substitutes for 7B7 tube Empty Substitutes for 7B7 tube

Post by frank1956 on Thu Jun 12, 2014 4:32 pm

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.
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Post by 75X11 on Thu Jun 12, 2014 5:18 pm

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
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Post by frank1956 on Thu Jun 12, 2014 7:14 pm

Thanks. This will help.
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Post by 35Z5 on Thu Jun 12, 2014 8:19 pm

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...
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