aj) Tube Substitutes
Whenever possible, tubes should be replaced with the specified type. This table lists some possible substitutes if the
original type is not available.
Note: Tube types consisting solely of numbers may be ruggedized or industrial versions of the same tube.
Tube Substitutes
0A2 6626, 6073
6AU6 6AH6, 6CG6, 6HS6, 6HR6, 6136 6678, 6660, 7543, 8425, 8426
6BE6 5750
6BN8 NONE
6CB6 6CF6, 6EW6, 6DE6, 6DK6, 8136
6CL6 6677, 6197
6EA8 6GH8, 6GJ8, 6HL8, 6KD8, 6LM8, 6MQ8, 6MU8, 6U8 -6678
6EB8 6CX8, 6GN8, 6HF8, 6JT8, 6LY8
6146 6146A, 6146B, 6146W
6GW8 NONE
12AT7 12AZ7, 7728, 6679, 6201, 5965, 5751
12AU7 12BH7, 5814, 5963, 6189, 6211, 6680, 6913, 6955, 7318, 7730
12AX7 5751, 6681, 7229
12AZ7 7728, 7025, 6681
12BY7 12BV7, 12DQ7, 8448, 7733
Table 13. Tube Substitution Chart
Tube Substitutes Page 187
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