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Classic Currents

(1) Tested RCA Radiotron UX-120 Tube Rainbow Glass Type 20 Tube UX120 Tube (h)

(1) Tested RCA Radiotron UX-120 Tube Rainbow Glass Type 20 Tube UX120 Tube (h)

Tested and Guaranteed

$38.95 USD
$38.95 USD
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(1) Tested 1920s RCA Radiotron UX120 (Type 20) Tube.
Beautifully unique 'Rainbow Glass' envelope.
Engraved base with brass pins.

There is a very small 1/8" hairline crack near the top lip on the backside of the base - see photo 4.

This tube tests on the low end but is still above the the minimum pass/good threshold.

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

Gm Test = 375 micromhos
Minimum pass/good = 330

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