Description
Two, Cunningham CX-301A, #01A tubes, with the globe/balloon glass envelope. These are of course exact equivalents to the UX-201A/UX201A, 01A, and 201A tubes. Tested on a Hickok TV-3 military tester that has been calibrated, just to make sure. Firm bases, excellent silvering. Tubes are matched for dynamic gain and structure- test at 975, 950 where pass/fail is 470 micromho. The tubes test at new levels for dynamic gain. The tubes have the same structure inside and out. Many other lots of tubes for sale this week. Shipping is free within the continental US. Elsewhere- exact postage only, no packing fee.