▼ Menu

    
Extras ▼

The 220TH (220-TH 220/TH) is a triode heptode mixer oscillator for superhet use.

The 220TH was the prototype for the VR82 that was later renamed the CV1082.

The last test results.

The reverse is plain zinc loaded screening paint.

The classic envelope is 50 mm in diameter and, excluding the B7 base pins, is 118 mm tall.

Reference: Data-sheet. Type 220TH was first introduced in 1938. See also 1938 adverts.

Pin Connections

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.