Sylvania 5BC3 Vacuum Tube Valve NOS NIB

Sylvania 5BC3 Vacuum Tube Valve NOS NIBThis new old stock, new in box Sylvania 5BC3 tested to spec on our Paul Hart calibrated TV7 U. 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 OF THE TUBES WE SELL ARE OVER 70 YEARS OLD. WE CANNOT GUARANTEE FOR FAILURES AFTER POWER UP AS THERE IS NO WAY TO DETERMINE

Tube One measured 60 while Tube Two measured 62 where minimum (65%) is 55 and 100% 85

They struck at (from left to right) 56 and 58 where 40 is minimum

This lot of two milspec Ken-Rad VT-86 / 6K7GT tubes was tested on our Paul Hart-calibrated TV7/U for shorts

WE CANNOT GUARANTEE FOR FAILURES

new in box Sylvania 6AQ7GT tubes tested to spec on our Paul Hart-calibrated TV7/U

I played them in my Radio Craftsmen RC-2 monoblocks (as an "excellent" 6SN7 substitute according to Antique Electronic Supply's "Tube Substitution Guidebook") and they sound outstanding

A nine out of ten

7 milliamps and transconductance was 1510 micromhos for Tube One

The 1P21 is missing a pin

Transconductance measured 49/56

Three of these four new old stock

In many respects