RCA CUNNINGHAM 2A3 BLACK PLATE - SPRING FILAMENTS - AMPLITREX & TV - 7D/U
Item History & Price
| Reference Number: Avaluer:17806765 | Model: 2A3 |
| Type: Vacuum Tube | Modified Item: No |
| MPN: Does Not Apply | Country/Region of Manufacture: United States |
| Brand: RCA CUNNINGHAM | UPC: Does not apply |
Up for bids an RCA Cunningham black plate 2A3
production code is RI.The tube has coiled spring filaments.The getter flash is full and shiny.The base is tight, there are no loose particles in the glass.
The tube has been tested in the best tube testers available.A Dan Nelson calibrated TV-7D/U and the Amplitrex AT-1000
The tube was tested for Mutual Conductance ( GM ), emissions
leaks, gas and noise on a Amplitrex AT-1000
The test results are.
&nb...sp; 96% emission 98% GM
with .6 mA of gas
The Dan Nelson calibrated TV-7D/U results are
60/38 or 3000/1900 micromhos
with 38 being minimum for a good 2A3 on this tube tester.
Shipping will be by first class mail.
Return period is 30 days.
production code is RI.The tube has coiled spring filaments.The getter flash is full and shiny.The base is tight, there are no loose particles in the glass.
The tube has been tested in the best tube testers available.A Dan Nelson calibrated TV-7D/U and the Amplitrex AT-1000
The tube was tested for Mutual Conductance ( GM ), emissions
leaks, gas and noise on a Amplitrex AT-1000
The test results are.
&nb...sp; 96% emission 98% GM
with .6 mA of gas
The Dan Nelson calibrated TV-7D/U results are
60/38 or 3000/1900 micromhos
with 38 being minimum for a good 2A3 on this tube tester.
Shipping will be by first class mail.
Return period is 30 days.
