Matched Pair RCA 12SN7 12SN7GTB Vacuum Tubes Stereo LP-1973 This new old stock-testing RCA
$26.64
Description
This new old stock-testing RCA black plate 12AU7A dual triode was tested on our Paul Hart-calibrated TV7/U for shorts
It measured 56/49 where minimum (65%) is 40/40 and 100% is 62/62
This is an early-production 12AU7 -- not a 12AU7A like most 12AU7s we see these days
new in box milspec black plate GE JAN-6Y6GT / JAN-CG-6Y6GT tubes tested to spec on our Paul Hart-calibrated TV7/U
This Lorenz 6AQ8 / ECC85 tube was tested on our Paul Hart-calibrated TV7/U for shorts
Matched Pair RCA 12SN7 12SN7GTB Vacuum Tubes Stereo LP-1973 This new old stock-testing RCAThis matched pair of RCA 12SN7GTB dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and transconductance measured as follows: Tube One: 63 64 Tube Two: 66 60 Bogey: Minimum (65%) is 50 50; 100% is 77 77 Physical Characteristics: Bases: tall Bottles: medium height Date Codes: 3 48 and 4 35 EIA Factory Codes: RCA logo; 274 Getters: bottom, D Flashing Quality: N A Mica Spacers,
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