Toshiba

HCC85 / 17EW8

16.00 USD

Double triode miniature glass tubes manufactured for Westinghouse by Toshiba in Japan. These fine 9 pin tubes are designed for use in RF amplifier and oscillator/mixer circuits of AM and FM radios. They come with short gray plates and top halo getters, and are printed in white17EW8/HCC85 MADE IN JAPAN; printing may be smeared or absent. Boxes are standard blue Westinghouse printed 17EW8/HCC85.

Condition

New Bulk
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.