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I-177 Tube Tester




Select or type a tube name to get specific settings for the I-177 Tube Tester.


Sort columns values by clicking their titles - A → Z or Z → A


Tube A B Filament L R Socket Press Notes
60958 56.370 17LAMPL
60961 96.355 20KAMPL Mut.Cond.1500.Shorts on 4 and 5.
60974 26.360 0KDIODE Shorts on 2 and 3.
60979 26.360 0KDIODE Shorts on 2 and 3.
60988 56.371 36EAMPL Use Adapter # 3.
609911 86.369 11KAMPL Mut.Cond.5000. See note D.
60991 26.369 11KAMPL Mut.Cond.5000. See note D.
61002 96.367 20LAMPL See note D.
610111 86.369 11KAMPL See note D.
61011 26.369 11KAMPL See note D.
611310 46.353 0GAMPL Mut.Cond.1400. Shorts on 2 and 3.
61134 16.336 0GAMPL Mut.Cond.900.
61344 26.371 10EAMPL Mut.Cond.3500.
61352 96.362 28LAMPL Mut.Cond.2200.
61361 96.362 18KAMPL Mut.Cond.2300
61374 26.359 18EAMPL Mut.Cond.1900.
61455 46.374 8FAMPL
6157 56.336 25EAMPL Connect right cap to upper right contact on A socket with lead provided. Connect grid lead to left cap.
61861 96.367 0KAMPL Mut.Cond.3000. Shorts on 4 and 5
61871 96.342 15KAMPL
61894 212.660 25EAMPL Use adapter #6 for triode #2.
61894 212.660 25EAMPL Use adapter #5 for triode #1.
62014 212.615 25EAMPL Use adapter #6 for triode #2.
62014 212.615 25EAMPL Use adapter #5 for triode #1.
62026 56.333 0KRECT. STD. Plate No.2.
Important
This I-177 data-base was created using data from I-177 beta 1.08 worksheet, from July 5, 2002. A great compilation by Nolam E. Lee.
Note A: The plate cap of the tube under test should be connected to the upper left contact of the 6-pin (C) socket. A 12-inch lead with clip and bananna plug is provided for this purpose.
Note B: Connect the plate cap (nearest the operator) to the upper left contact of the 6-pin (C) socket; use the lead provided. Connect the grid lead to the remaining cap on the tube.
Note C: Set the MICROMHOS switch at 6000 when testing this section if the tube tester bears either Order No. 27613-Phila-44-52 or 52346-Phila-45-10 on the nomenclature plate.
Note D: This test is only a partial indication of a good tube. A complete test is only possible when using equipment.
Note E: Do not tap on this tube when testing for short because damage to the tube may result.
Note F: The Mutual Conductance values listed are averages for new tubes and only for a guide.

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Last modified: Jun 5, 2026 20:40
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