2 RCA 25Z5 Vacuum Tubes Valves Lot Of Two June 13 2025 Two end links are available

Two end links are available

This lot of three US-made 7F7 tubes was tested on our Paul Hart-calibrated TV7/U and measure as follows:

Transconductance measured 46 where minimum (65%) is 36 and 100% is 55

This trio of Toshiba output tubes was tested on our Maxi-Matcher in Real World Conditions with 400 volts on the plates and a bias of -36 volts for shorts

It is a strange bird with well over an inch of space above the top mica spacer

2 RCA 25Z5 Vacuum Tubes Valves Lot Of Two June 13 2025 Two end links are availableThis lot of two RCA 25Z5 tubes were tested on our Paul Hart calibrated TV7 U for emissions, shorts and gas. There were no shorts or gas and they measured as follows: 44 50 and 52 50 where minimum (65%) is 40 40 and 100% is 62 62. 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.