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The CV2209 is a miniature HF pentode. Typical operating conditions are found in the attached data-sheet.

The prototype was the Mazda designed CV1116 that was fitted with an MO base cap.

The anode seen as two plates separated by a strap. The suppressor grid is close wound and thus can be used as an additional control grid.

Obscured by the inner coating is the anode with the strap on the right.

The thin glass tube envelope is 18 mm diameter and excluding the B7G base pins, is 47 mm tall.

Reference: Data-sheet. Type CV2209 was first introduced in 1952. See also 1952 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.