KEN-RAD Type 81

POWER VACUUM TUBE

RECTIFIER TYPE TUBE

VINTAGE STOCK

Coke Bottle Shape

Black Plate

Bottom Cup Getter

Engraved Base

MADE IN USA

DATE CODE: U

TESTED on HICKOK TV-7

Results: 68

Minimum: 40

Combined Shipping Available!  Buy any amount of Tubes in USA and pay just shipping for one! International buyers combined shipping 0-8 oz package $16  and  8-24 Oz - $26

All Tubes Tested on a Calibrated Hickok TV7 or Sencore TC136