2 Ken-Rad Number / Type 19 #19 Vacuum Tubes Lot Of Two Output Tube Triode made on the same equipment

made on the same equipment by the same people

This hard cover book is in good condition

Raytheon CK1123 Raysistor Control Circuit NOS NIB

anode radiators for cooler tube operation and longer life and 312 5126 and 312 5052 provenance/date codes

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

2 Ken-Rad Number / Type 19 #19 Vacuum Tubes Lot Of Two Output Tube Triode made on the same equipmentThis 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