Hytron 1625 VT-136 Vacuum Tube Valve Milspec Industrial Coated Glass NOS-Testing

Hytron 1625 VT-136 Vacuum Tube Valve Milspec Industrial Coated Glass NOS-TestingThis new old stock testing milspec, gray glass 1625 VT136 output triode was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 70 where minimum (65%) is 40 and 100% is 62. It has excellent flashing; a Micanol base; an SC966A US Army Signal Corps designation and wire snubbers for increased rigidity and lowered microphonics. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF

Tube Four: 34/2240 where new/nominal is within one standard deviation of 1900

top D getters and excellent flashing

new in box RCA 14Q7 tubes tested to spec in our Jackson 648 Mutual Conductance tester

This lot of three US-made Type 27 / 227 triodes were tested on our Paul Hart-calibrated TV7/U for shorts

It tested 64 in both sections where minimum (65%) is 40/40 and 100% is

new in box Sylvania 50X6 tubes tested to spec on our Paul Hart-calibrated TV7/U

These four Super Silvertone 12A8GT tubes were tested for shorts

They sound spacious with excellent dynamic range and frequency response on these challenging pieces -- and are dead quiet when the CD player is muted

59-43 188-5 and 5-48 188-5 date/provenance codes

These two photomultiplier tubes could not be tested and are sold as-is

Tube Two measured 1780/19

dynamics and frequency response