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(1) Tested Raytheon Type 78 Tube Engraved Base Shouldered Pentode Vacuum Tube

(1) Tested Raytheon Type 78 Tube Engraved Base Shouldered Pentode Vacuum Tube

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$11.95 USD
$11.95 USD
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(1) Tested Raytheon Type 78 Engraved Base Tube.

This tube tests as NOS.

Tested on a calibrated Hickok TV-10 military tube tester and exhibiting no shorts or leaks with the following results:

Gm Test = 1600 micromhos
Minimum pass/good = 900
NOS rating = 1350

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