Matched Pair OTK 6N1P 6H1П 6BQ7 6DJ8 ECC88 Milspec Vacuum Tubes New From Bulk Box Virgil Fox Encores PLEASE SEE PICTURE

PLEASE SEE PICTURE

This matched pair of Raytheon black plate

a US Army Signal Corps anchor logo and a K4 date code

It has the nostalgic shoulder / Coke bottle glass envelope

Matched Pair OTK 6N1P 6H1П 6BQ7 6DJ8 ECC88 Milspec Vacuum Tubes New From Bulk Box Virgil Fox Encores PLEASE SEE PICTUREThis matched pair of new from bulk box, milspec OTK 6H1 6H1P 6BQ7 6DJ8 ECC88 dual triodes was tested on our Paul Hart modified TV7 U for shorts, gas and transconductance. There were no shorts or gas. These tubes were tested using 6BQ7 settings which are the closest US European tube type to this Soviet tube type. All have the OTK rocket and 8911 date codes. They measured 32 32 for Tube One and 33 33 for Tube Two. Minimum (65%) is 26 26 for the similar