Sylvania 6B4 6B4G Vacuum Tube Valve Output Tube Triode High Fidelity P-1100 Transconductance measured 50 for Tube

Transconductance measured 50 for Tube One and 54 for Tube Two where minimum (65%) is 40

63-29 188-20 date/EIA codes

This RCA 872A rectifier tube is used

Bottles: tall

Sylvania 6B4 6B4G Vacuum Tube Valve Output Tube Triode High Fidelity P-1100 Transconductance measured 50 for TubeThis Sylvania 6B4G tubes was tested on our Hickok Paul Hart calibrated TV7 U for transconductance, shorts and gas. There was no shorts or gas. It measured 54 for minimum (65%) is 38 and 100% is 58. It has 0 26 date codes; perforated plates; a dimpled sheet getter and outstanding flashing. WE HAVE SCORES OF THOUSANDS OF VACUUM TUBES. IF IT'S NOT LISTED, WE MAY HAVE IT. PLEASE ALSO SEE OUT ETSY SISTER SITE "LOWTECHTWOO" AND OR CALL OR TEXT US AT 202 372