5 US-Made 6F5 Vacuum Tubes Valves Lot Of Five 1st Quarter BW02

5 US-Made 6F5 Vacuum Tubes Valves Lot Of Five 1st Quarter BW02These five US made 6F5s were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and they measured as follows: 24, 26, 35, 48 and 49 where minimum (65%) is 25. 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

It measured 82/91 where minimum (65%) is 50/50 and 100% is 77/77

It has an engraved / stamped base

I played them in my Alan Eaton single-ended 45 amplifier (as an "excellent" 6SN7 substitute according to Antique Electronic Supply's "Tube Substitution Guidebook") and they sound outstanding

78 and 80 where minimum (65%) is 46 and 100% is 71

Two are National Union and there are one each of GE and RCA

OEM-BRANDED black glass 6K6GT tubes was tested on our Maxi-Matcher tube tester with 325 volts on the plates and a bias of -36 volts

WE HAVE TENS OF THOUSANDS 0F VACUUM TUBES

This matched pair of Sylvania black plate 6CL6 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

This RCA 604 / 7014 rectifier tube looks only slightly used

Tube Five has been repaired

new in box milspec Tung-Sol JTL-6206 / 6206 tubes in this lot

I am playing them in one of my Radio Craftsmen SC-2 monoblocks as I write