2 RCA 2B7 Cunningham Radiotron Vacuum Tubes Valves Lot Of Two February 03 2021 This lot of six RCA

This lot of six RCA 6GH8A tubes tested to spec on our Paul Hart-calibrated TV7/U

They tested 54

The dust jacket is in nice condition

This matched pair of Sylvania-MANUFACTURED

where minimum (65%) is 40/40

2 RCA 2B7 Cunningham Radiotron Vacuum Tubes Valves Lot Of Two February 03 2021 This lot of six RCAThis lot of two RCA Cunningham Radiotron 2B7 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas, emissions and transconductance. There were no shorts or gas and they tested as follows: Tube one measured 30 in its triode section where minimum (65%) is 25 and 100% is 38. Its diodes measured 57 and 54, respectively, where minimum (65%) is 40 40 and 100% is 61 61. Tube Two (triode): 32 Tube Two (diodes): 60 42 WE HAVE SCORES OF THOUSANDS