2 Ken-Rad Number / Type 19 #19 Vacuum Tubes Lot Of Two Output Tube Triode new in box Zenith 6JH8

new in box Zenith 6JH8 tubes tested to spec on our Paul Hart-calibrated TV7/U

Raytheon CK1123 Raysistor Control Circuit NOS NIB

transconductance and gain

This new old stock-testing matched pair of 1960s vintage Sylvania Fat Boy EL34 / 6CA7 tubes was tested on our Maxi-Matcher 2 tube tester with 400 volts on the plates and a bias of -36 volts on the grids for shorts

They measured 48 and 56

2 Ken-Rad Number / Type 19 #19 Vacuum Tubes Lot Of Two Output Tube Triode new in box Zenith 6JH8This lot of two Ken Rad MANUFACTURED number 19 tubes was tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas. They measured 30 34 and 38 37 where minimum (65%) is 25 25 and 100% is 38 38. They have engraved hot stamped bases. One is Wards branded and the other is Zenith. Their internal structures are all the same, though they are labeled differently. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S