Cape Old Radio - I 177 Tube Tester

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Tube	A	B	Filament	L	R	Socket	Press	Notes
1291	1	6	2.5	35	25	F	DIODE	Shorts on 4 and 5. Reads in Green. Plate 2.
1291	6	6	2.5	35	25	F	DIODE	Shorts on 4 and 5. Reads in Green. Plate 1.
1293	6	2	1.5	50	25	F	AMPL	Mut.Cond.1300. See note D.
1294	10	5	1.5	0	0	F	DIODE
1299	6	2	2.5	61	30	F	AMPL	Mut.Cond.2100. Short on 1. See note E.
12A	2	10	5	57	36	A	AMPL	Mut.Cond.1650.
12A5	2	10	12.6	58	42	D	AMPL	Mut.Cond.1800.
12A5	1	12	6.3	0	0	D	NOTHING	Check for shorts
12A6	8	5	12.6	67	10	E	AMPL	Mut.Cond.3000.
12A7	7	3	12.6	40	0	D	RECT. STD.
12A7	7	6	12.6	39	39	D	AMPL	Mut.Cond.975.
12A8	12	7	12.6	60	30	E	AMPL	Mut.cond.300. OK over 240. See note D.
12A8	7	7	12.6	41	18	E	AMPL	Mut.Cond.1000. See note D.
12AH7	7	10	12.6	50	19	G	AMPL	Mut.Cond.2000.
12AH7	11	7	12.6	50	19	G	AMPL	Mut.Cond.2000.
12AL5	4	2	12.6	60	0	K	DIODE
12AL5	9	2	12.6	60	0	K	DIODE
12AQ5	8	5	12.6	70	17	L	AMPL	Mut.Cond.3700.
12AT6	1	8	12.6	0	0	K	DIODE
12AT6	4	8	12.6	0	0	K	DIODE
12AT6	11	4	12.6	47	15	K	AMPL	Mut.Cond.1200.
12AT7	4	2	12.6	15	25	E	AMPL	Use adapter #6 for triode #2.
12AT7	4	2	12.6	15	25	E	AMPL	Use adapter #5 for triode #1.
12AU6	7	9	12.6	63	12	K	AMPL	Mut.Cond.2300.
12AU7	4	2	12.6	60	25	E	AMPL	Use adapter #6 for triode #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.