Westinghouse 25AV5 25AV5GT Vacuum Tube NOS NIB Atmospheric Horel Transconductance measures the efficiency of

Transconductance measures the efficiency of a tube and also serves as a tube life measurement proxy as tube efficiency diminishes with age

This lot of four North American-made number 78 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

This is a fun LP

There was no shorts or gas

new in box Westinghouse 6X4 tested to spec on our Paul Hart-calibrated TV7/U

Westinghouse 25AV5 25AV5GT Vacuum Tube NOS NIB Atmospheric Horel Transconductance measures the efficiency ofThis Westinghouse 25AV5GT tube and another just like it tested to spec on our Paul Hart calibrated TV7 U. Etsy will indicate how many tubes are available in this Dutch auction. 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 EXCEPT MEDIA MAIL ARE