Matched Pair Hytron 6V6 6V6GT Vacuum Tubes Black Glass NOS-Testing For Pleasure This hardcover book is in

This hardcover book is in good condition

This new old stock-testing matched pair of RCA 1625 / VT-136 output triodes was tested on our Paul Hart-calibrated TV7/U for shorts

There is a hairline crack in the base of Tube Two

new in box milspec GE USN-2B22 tube is still in its shrinkwrap

These three new old stock-testing US-made 1H4G tubes were tested on our Paul Hart-calibrated TV7/U for shorts

Matched Pair Hytron 6V6 6V6GT Vacuum Tubes Black Glass NOS-Testing For Pleasure This hardcover book is inThis new old stock testing matched pair of Hytron black glass 6V6GT output tubes was tested on our Maxi Matcher 2 with 400 volts on the plates and a bias of 36 volts for shorts, gas and transconductance. There were no shorts or gas and they tested as follows: Tube One: Tube Two: Plate current draw: 26. 3 milliamps Plate current draw: 28. 4 milliamps Transconductance: 2540 micromhos Transconductance: 2390 micromhos (New US made 6V6s typically test with