6ak5 (ef95) Vacuum Tube - Hewlett-packard - Usa - 1950's (black Plates)

US $340

Gloucester, Massachusetts, United States
Jun 4th

Open on mobile:
QR code

You are bidding on (1) Hewlett Packard 6AK5 electron tube, made in the USA in the 1950's. Yellow silkscreen, double mica spacers, black plates, and top mounted round halo getter. We got this tube with a large lot we purchased and all had been tested on an Amplitrex AT-1000 digital tube tester. The test results were printed and are attached to the boxes. Test results as follows: 5550 umhos where 1100 - 2200 umhos 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 epe1003, nai-0648) 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.