On sale!
-4.00 USD

5726 / 6097 / 6AL5W HUGHES

12.00 USD

8.00 USD Save 4.00 USD

Historical miniature glass 7 pin double diodes manufactured in USA for Hughes Aircraft Company by CBS. This type of tube (similar to E91AA and CV4007), flew in the giant legendary Spruce Goose flying boat. With silver plates and square top getters, these tubes are printed in red CBS JHY 5726 / 6AL5W / 6097 MADE IN U.S.A. and glass-etched 5726 6AL5W 6097. Boxes are brown military printed in black HUGHES AIRCRAFT CO. CULVER CITY, CALIF. HAC PART NO. 90370-6 CONTRACT NO. AF33(600)32016.

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.