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