SKU:53636313361
United 805 Vacuum Tube Output Valve
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USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 2 - Aug 7
Description
United 805 Vacuum Tube Output ValveThis United 805 output triode was tested on our Paul Hart calibrated TV7 U with 180 volts on the plates and a bias of 0 volts for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 34 where minimum (65%) is 30 and 100% is 46. This tube has fair to nice flashing; 2AC 08148 6221 date codes and a beefy D getter. It is the tube on the left and is shown running with the RCA single that is also for sale separately. I am
This matched pair of RCA 6BG6G output tubes was tested on our Maxi-Matcher with 400 volts on the plates and a bias of -48 volts for shorts
2 for Tube Two
new in box GE 8CG7 / 8FQ7 tubes tested to spec on our Paul Hart-calibrated TV7/U
It measured 51/56 where minimum (65%) is 50/50 and 100% is 77/77
It has a top getter
dimpled-sheet getters and two additional support rods per tube for increased rigidity and lowered microphonics
Transconductance measured 74/69 where minimum (65%) is 50/50
68 and 74 where minimum (65%) is 52 and 100% is 80
new in box Philco 25Z5 tubes tested to spec on our Paul Hart-calibrated TV7/U
coke-bottle-shape glass envelopes and terrific flashing
They measured 76/82
they were forwarded to West Germany
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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