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AC/DDTRSensibly equivalent¶ to:See also:
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The AC/DDTR is a double diode triode for detection and first AF amplifier in superhet receivers. It was an cost saving to make all three devices in a single envelope with a common cathode. This style became the normal configuration. This valve is specified for a cathode resistor of 1kΩ.The classic envelope is 36 mm in diameter and, excluding the B7 base pins, is 96 mm tall.References: Data-sheet & 1043. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | tc |  a(d2) | m | a(d1) | h | h | k | a | g1 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vg | mAa | ra | gm | 
| 4.0 | 0.65 | 250 | -5 | 4.0 | 11,400 | 3.6 |
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Updated December14, 2012.
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