The CV1071 is directly heated full wave rectifier with a rating of 500 Volts on the anodes and a PIV of 1,400 V. The CV1071 has a maximum reservoir capacitor rating of 16 µF and a minimum series resistance of 180 Ohms.
Most of the CV designation lettering has rubbed off.
The CV1071 is identical to the commercial U52
The flat side of one of the anodes. Within the filament is an inverted V.
Here the filament tensions springs can be seen to be holding an oxide coated ribbon.
The classic envelope is 50 mm in diameter, and excluding the IO base pins, is 109 mm tall.
