The ECH11 is a triode hexode frequency changer for use in a superhet receiver.We have the complete line-up of valves from the set this valve was used in. Frequency changer ECH11, IF amplifier EF11 x 2, demodulator, AGC detector and first audio stage EBC11, push-pull audio output EDD11 and rectifier EZ11.![](../pics/aaa1462a.jpg)
The sides are painted plain black.The wide metal tube envelope is 36 mm in diameter, and excluding the footless base pins is 42 mm tall.Reference: Data-sheet. Type ECH11 was first introduced in 1939. See also 1939 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | ![](../static/key.gif) g2,g4 | g1 | k,m | a | h | h | g3,g1(t) | a(t) |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | mAa | ![](../static/pdflogo.gif)
| 6.3 | 0.2 | 250 | 2.2 |
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Updated September 10, 2013.
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