| European | American | Pattern | Base |
| EM1 | | Four light sectors | ? |
| EM2/EM3 | | Two/four light sectors | ? |
| EM4/EM5 | | Dual range, two/four shadow sectors | ? |
| EM11 | | Dual range, four shadow sectors | ? |
| EM34 | 6CD7 | Dual range, two shadow sectors | Octal |
| EM35 | | Dual range, four shadow sectors | Octal |
| EM71, EM72 | | Shadow sector | 8 pin |
| EM80 | 6BR5,6M40 | Light sector | Noval |
| EM81 | 6DA5 | Shadow sector | Noval |
| EM84 | 6FG6 | Light band | Noval |
| EM85 | 6DG7,6DU6 | Shadow sector (EM84 pin compatible) | Noval |
| EM87 | 6HU6 | Light band (improved EM84) | Noval |
| EM840 | | Light band (EM84 pin compatible) | Noval |
| EMM801 | | Dual light band | Noval |
| EMM803 | | Dual light band | Noval |
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