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-10.00 USD

ECF86 / 6HG8 DIAMOND BASE

23.00 USD

13.00 USD Save 10.00 USD

Diamond base top quality minature glass triode pentode tubes, from 100 cases, manufactured in Germany by renowned Telefunken. These 9-pin two-section tubes; medium-mu triode and sharp cut-off pentode, are designed for VHF oscillator and mixer service in television receivers. With top halo getters and gray plates, some of these tubes are coded as photo, and others B5004902 – all Berlin factory production. Boxed in standard blue and red Telefunken boxes printed ECF86.

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.