Western Electric

717A / VT-269 BLACK PLATE

32.00 USD

Great Mil. Spec. pentode amplifier tubes manufactured in the United States for the Armed Forces by subcontractor Tung-Sol for Western Electric. These 8 pin octal based black plate tubes come glass-etched on top WESTERN ELECTRIC BY TUNG-SOL 717A VT-269 MADE IN U.S.A., and are boxed in military beige boxes printed WESTERN ELECTRIC 717A VACUUM TUBE MADE IN U.S.A. FOR SIGNAL CORPS S.C. ORDER NO. 217-WF-42 indicating 1942 production.

Condition

New Old Stock (New in box)

	Tube Matching 6.00 USD by tube
LEARN MORE WHY ? A tube may have one, two, or three internal sections depending on the purpose of the tube; somtimes these sections are all the same, sometimes they are different. Due to manufacturing and material tolerances, there may be slight differences between the original specification and the actual tube. Tube matching tests each one of these internal sections and selects tubes, compared to original specifications at manufacture, for balanced performance and good sound. HOW ? All our tubes are tested by us prior to packing on our Stark, AVO, Simpson or RF Laboratories Inc. calibrated testers. On request for tube matching, tubes are matched for Mutual Conductance in Micromhos and Plate Current in Milliamps on our Amplitrex or Radioelec Duovac testers, with results printed for each individual tube. Certain tubes difficult to test are matched for Mutual Conductance in Micromhos only on one of our regular calibrated testers. On request we can also test for Microphonics.