Thread: Built myself a retro signal tracer for tube radios
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  #14  
Old 12-22-2014, 10:23 PM
VTVM VTVM is offline
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Join Date: Jan 2014
Posts: 35
The 6al5 is in fact a european four numbered equivalent drop in for an American 6al5. I can't remember the number. The insides are the same but the bulb is taller.
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