Sylvania 82B 82-B Vacuum Tube Valve Balloon Globe Shape Engraved Stamped Base 6SK7 Industrial new in box (for Tube

new in box (for Tube Two) aesthetically-matched pair of gray glass RCA 12SL7GT dual triodes was tested on our Paul Hart-calibrated TV7/U for shorts

This hardcover book is in good condition

Plates: gray ladder plate

Transconductance was 1530 for Tube One and 1430 for Tube Two where new/nominal is within one standard deviation of 1900

new in box matched pair of Sylvania gray glass 7C5 tubse was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volt for shorts

Sylvania 82B 82-B Vacuum Tube Valve Balloon Globe Shape Engraved Stamped Base 6SK7 Industrial new in box (for TubeThis Sylvania 82 B 82B tube tested 51 on our Paul Hart calibrated TV7 U where minimum (65%) is 38. It is globe Balloon shaped; has a hot stamped base; a thimble getter and great flashing. BECAUSE OF THE BIZARRE, INTRUSIVE AND DRACONONIAN PACKAGING REGULATIONS COMING INTO EFFECT IN GERMANY AND THE SEVERE FINES AND PRIVACY INTRUSIONS ASSOCIATED WITH THEM WE NO LONGER SHIP TO GERMAN ADDRESSES. WE WILL HAPPILY SEND YOUR PACKAGE TO A NEIGHBORING COUNTRY OR