| Search Radio by Make, Model, Year, and/or Country. |
Home
|
New on Site
|
Image Index
|
Contact
|
Beitman's & Rider's
|
Useful Links
|
Technical Info
|
Tube/Valve
|
Radio Collection
|
|
Sort columns values by clicking their titles - A → Z or Z → A
| Tube | A | B | Filament | L | R | Socket | Press | Notes |
|---|---|---|---|---|---|---|---|---|
| 313C | 2 | 10 | 50 | 0 | 0 | A | DIODE | Good tube gives meter reading. May read in red sector. See note D. |
| 313CC | 2 | 10 | 50 | 0 | 0 | A | DIODE | Good tube gives meter reading. May read in red sector. See note D. |
| 313CD | 2 | 10 | 50 | 0 | 0 | A | DIODE | Good tube gives meter reading. May read in red sector. See note D. |
| 32 | 2 | 5 | 2 | 19 | 30 | A | AMPL | Mut.Cond.640. |
| 328A | 8 | 5 | 7.5 | 54 | 16 | C | AMPL | |
| 329A | 7 | 6 | 7.5 | 62 | 33 | B | AMPL | |
| 32L7 | 11 | 5 | 35 | 40 | 0 | E | RECT. STD. | See note D. |
| 32L7 | 8 | 5 | 35 | 71 | 18 | E | AMPL | Mut.Cond.4800. |
| 32L7 | 11 | 5 | 35 | 0 | 0 | E | NOTHING | Test for shorts. |
| 33 | 1 | 5 | 2 | 50 | 29 | B | AMPL | Mut.Cond.1450. |
| 336A | 8 | 5 | 10 | 60 | 20 | C | AMPL | Allow tube 60 seconds to warm up. Set MICROMHOS switch at 6000. OK over 750. |
| 337A | 2 | 5 | 10 | 50 | 16 | C | AMPL | |
| 338A | 1 | 6 | 10 | 40 | 80 | B | RECT. STD. | Tube strikes at approximately 35 on R when this control is turned counterclockwise. See note D. |
| 339A | 12 | 1 | 5 | 60 | 45 | B | AMPL | Set MICROMHOS switch to 6000. OK over 1250. See notes A and D. |
| 34 | 2 | 5 | 2 | 14 | 27 | A | AMPL | Mut.Cond.600. |
| 345A | 7 | 7 | 6.3 | 40 | 0 | B | RECT. STD. | Allow tube 60 seconds to warm up. See note D. |
| 345A | 4 | 3 | 6.3 | 40 | 0 | B | RECT. STD. | Allow tube 60 seconds to warm up. See note D. |
| 348A | 1 | 9 | 6.3 | 48 | 18 | E | AMPL | |
| 349A | 8 | 5 | 6.3 | 67 | 30 | E | AMPL | |
| 35 | 7 | 6 | 2.5 | 42 | 20 | B | AMPL | Mut.Cond.1020. |
| 350A | 12 | 1 | 6.3 | 73 | 27 | B | AMPL | See note A. |
| 350B | 8 | 5 | 6.3 | 73 | 27 | E | AMPL | |
| 352A | 10 | 3 | 10 | 0 | 0 | C | DIODE | |
| 352A | 10 | 6 | 10 | 0 | 0 | C | DIODE | |
| 352A | 7 | 6 | 10 | 28 | 20 | C | AMPL | |
| 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. |
Last modified: Jun 5, 2026 20:40
Cape Old Radio - Since Nov, 1996
1996 - 2026 © Carlos Eduardo Lazarini da Fonseca