Matched Pair Ken-Rad 6V6 6V6GT Vacuum Tubes Valves Black Bottles NOS-Testing March 20 2023 They have chamfered top O

They have chamfered top O getters

5 amps for their filaments as compared to

but tests on the low side for a new tube

This mono LP has some surface noise in the quiet passages and warrants a 7

This black plate GE 5Y3GT rectifier tube was tested on our Paul Hart-calibrated TV7/U for shorts

Matched Pair Ken-Rad 6V6 6V6GT Vacuum Tubes Valves Black Bottles NOS-Testing March 20 2023 They have chamfered top OThis new old stock testing matched pair of Ken Rad 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. Tube One drew 30. 5 milliamps' plate current and tested 2600 micromhos while Tube Two tested 31 3000. (New US made 6V6s typically test with plate current from the mid teens to mid 30s with transconductance from 2300 micromhos or so.)