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MULLARD EM1 TUNING INDICATOR MAGIC EYE, 1936

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MULLARD EM1 TUNING INDICATOR MAGIC EYE, 1936

Mullard end viewing Tuning Indicator with side contact base type Ct8. The EM1 followed the TV4 . The EM1 was introduced to eliminate the problems associated with the old TV4, and had a 6.3v heater.
The tube shown has a concave disc inside that is illuminated on the sides of the bottom edge, as the signal is increased the two illuminated edges move towards each other in an arc until they touch at full signal.

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A0683



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