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UF85 / 19BY7 MESH PLATE
  • UF85 / 19BY7 MESH PLATE
  • UF85 / 19BY7 MESH PLATE
Philips

UF85 / 19BY7 MESH PLATE

11.00 USD
4.00 USD Save 7.00 USD

Fine miniature glass pentode tubes manufactured in Holland by renowned Philips. Designed as variable mutual conductance pentodes, these 9-pin tubes are suitable as broadband amplifiers, or as I.F. and R.F amplifiers in FM radio receivers. They have silvered mesh plates, top halo getters, and are printed in white PHILIPS UF85. Boxes are standard yellow blue and white Philips printed UF85.

Condition

Tube Matching
Tube Matching
6.00 USD by tube

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.
Quantity

Philips
50 Items

Data sheet

Base
9 pin miniature Noval B9A
Boite type
1/1
Emplacement
50
Quide
5050
Fonction
Pentode
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