H-112-40-1.1562 ID-0.29
US$ 53.72
National Union NU 813 Vacuum Tube Milspec Transconductance measured 50/52 for Tube
$20.87
Description
Transconductance measured 50/52 for Tube One and 53/52 for Tube Two where minimum (65%) is 25/25 and 100% is 39/39
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This new old stock-testing matched pair of Philips Miniwatt PCF80 / 9U8 tubes was tested on our Paul Hart-calibrated TV7/U for shorts
There were no shorts or gas and it measured / where minimum (65%) is 40/40 and 100% is 62/62
National Union NU 813 Vacuum Tube Milspec Transconductance measured 50/52 for TubeThis National Union plate 813 output triode was tested on our Paul Hart calibrated for shorts, gas and transconductance. There were no shorts or gas. It measured 64 where minimum is 40 and new is 74. 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 6931 IF YOU DO NOT SEE WHAT YOU NEED OR HAVE ANY QUESTIONS. 1. MOST FORMS OF SHIPPING
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