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TOPIC: SBT-11 Interior

SBT-11 Interior 1 month 1 week ago #3476

  • Sonarflash
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Here is an attached photo of the SBT-11, (not the alpha version), with the mica window removed. This tube kept avalanching at 350 to 400 VDC, , so was unusable.
Pardon the photo quality. Old Canon camera.
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