connector tube for sale, brand-new and used.

LOT #:140713-9802.13 BIDS FROM ALL COUNTRIES GLADLY ACCEPTED. For all international orders, the Customs/Duty Taxes or other shipping related fees are not included. This item may be missing parts or condition may be different than expected.

Avaya 5 Pin 4B ( gas tube with sneak current protection ) protectors. These have been just taken out of service from a clean dry environment and were only in service a couple of years. They look new.

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Here is a mutual conductance tester you can be proud of and count on for decades to come, a beautiful refubished, calibrated, and improved B&K 707. This one was from Glendale Union High School, Phoenix, AZ and has not seen much use - a great thing! Very well preserved and super clean from that dry climate.

Used PMT PHOTONIS PHOTOMULTIPLIER TUBE XP3112/PB 270-650nm You are bidding on PHOTONIS PHOTOMULTIPLIER Model: XP3112/PB The tube needs an external power supply to operate.

TYPE: Mutual Conductance Dynamic Tube Tester MAKE/MODEL: B&K Model 700 FEATURES INCLUDE: but are NOT limited to the following: CHECKS 4, 5, 6, & 7 pin large, regular and mini, octal, including many AUDIO & RF tubes, various filament voltages, tube chart + MORE! INCLUDES: (1)B&K Model 700 with AC Cord (2) DYNA-QUICK Tube Testing Chart (3) tube plate cap wire with connector. IN GOOD WORKING CONDITION.

This listing is for a Eico 610 Nuvistor Novar Compactron Adapter Tube Tester Modernization Panel. This allows you to Update Older Vacuum Tube Testers. You plug this into the 9 pin miniature socket on older model testers and you can test Compactrons, Novars, Nuvistors and 10 pin tubes that could not be tested on earlier models.

From my personal collection, here is a mutual conductance tester you can be proud of and count on for decades to come, a beautiful refubished restored and calibrated B&K 747. This one is originally from State of Connecticut, Dept of Education and has clearly not seen much use. Very well kept and super clean, no rust nor corrosion to be seen.

Hickok 539 A - Tube Tester Mutual Trans-conductance Tester with Plate Current measuring facility Top Metal Plate is in excellent condition. See Photos for the condition of the unitSelf Bias or adjustable biasVery good alternative to the expensive Hickok 539B and 539C. Multiple signal levels with various Micromho ranges makes this tester on par with 539 B or C The tester original box had no cover and was not in good shape, so i replaced my it with my Hickok 533A box.

Precision Apparatus Model 912 Vacuum Tube Tester. This unit is in good working order and comes with a Noval 9 pin socket (early models did not have a 9 pin socket). The photos show the short indicator light as well as the meter functioning properly on a known good tube.