Tested 2900/2900 µmhos on a Hickok 752A where minimum is 1600/1600 


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Marconi 5692 6SN7GTB RCA Red Base NOS Vacuum Tube

  • Brand: RCA
  • Product Code: Marconi 5692 6SN7GTB
  • Availability: Out Of Stock
  • $79.99 USD


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Tags: 5692, 6SN7GTB, vacuum, tube