Description

You are bidding on (2) 33GY7A e lectron tubes , made in the USA in the 1960's and 1970's: one is RCA, one is Admiral. These test as an electrically matched pair. Both are gray plates; tubes will ship in generic individual tube boxes. Tubes have been tested on a calibrated Bitmatic (Western Electric KS-15874-L2) computerized tester and are guaranteed good; test results as follows: RCA: Section 1 tests 6150 mhos where 4100 - 8200 umhos is the acceptable range for the tester Section 2 tests 222 mA where 142 - 284 mA is the acceptable range for the tester Section 3 tests 44.2 mA where 34 - 68 mA is the acceptable range for the tester Admiral: Section 1 tests 6068 mhos where 4100 - 8200 umhos is the acceptable range for the tester Section 2 tests 222 mA where 142 - 284 mA is the acceptable range for the tester Section 3 tests 44.2 mA where 34 - 68 mA is the acceptable range for the tester All our tubes are tested and guaranteed by us; we only test tubes on one of our quality calibrated mutual conductance testers, NEVER on an emissions tester. The testers we use are Phil Frakes's Bitmatic computerized Cardmatic testers from Tubesontheweb, the specific models are Western Electric KS-15874-L2's which were made for Western Electric by Hickok; we currently own two of these testers. Our backup testers which we use occasionally are military TV-10D/U's. For specialized tests, we employ one of our VTV Dual Triode Characterizers (for preamp tubes) as well as a Maxi-Matcher (for power tube matching). Tubes are guaranteed for 90 days, refund or replacement our choice. Thanks for looking at our auction and be sure to check out our other auctions for other tubes that may be of interest. (lot ewa1001) SPECIAL OFFER - FREE brand new VE Tube Pin Straightener (Made In USA) for all orders over $250!!! Works with 7 pin miniature, 9 pin miniature, Magnoval, Novar, and Compactron tubes. Also available for individual sale, please visit our store and search for Tube Pin Straightener.