6 RCA 50B5 Vacuum Tubes Valves Black Plate Lot Of Six 5V6GT Octal

6 RCA 50B5 Vacuum Tubes Valves Black Plate Lot Of Six 5V6GT OctalThese six RCA black plate RCA 50B5 tubes 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: 40, 44, 48, 48, 61 and 66 where minimum (65%) is 45. 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

This matched-pair of GE 6AU6A tubes was tested on our Paul Hart-calibrated TV7/U tube tester for shorts

wire or mica snubbers (for low microphonics) and excellent flashing

There was no gas

new in box Raytheon 1H5GT tube tested to spec on our Paul Hart-calibrated TV7/U

new in box US-made 12K7GT tubes tested to spec on our Paul Hart-calibrated TV7/U

This matched pair of Hytron black glass 6V6GT output tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volts for shorts

gray plates and excellent flashing

Transconductance: 2710 micromhos

There were no shorts or gas and they all measured 2200 micromhos where new/nominal is 2000 and minimum (65%) is 1300

not included) and they sound excellent

IF THERE WERE A TEST FOR FUTURE FAILURE

These matched pair of engraved-base