8 RCA 6S4 6S4A Vacuum Tubes Valves NOS NIB Lot Of Eight December 03 2024

8 RCA 6S4 6S4A Vacuum Tubes Valves NOS NIB Lot Of Eight December 03 2024This lot of eight new old stock, new in box RCA 6S4A tubes tested to spec on our Paul Hart calibrated TV7 U. Seven are 6S4As and one is a 6S4, 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 AUTOMATICALLY INSURED UP TO $100. ETSY

They have shoulder / Coke bottles and are perfect for the restorer who wants absolute historical accuracy

This new old stock-testing matched pair of milspec Raytheon black glass VT-107-A / JAN-CRP-6V6-GT output tubes was tested on our Maxi-Matcher 2 with 400 volts on the plates and a bias of -36 volts for shorts

Tube One is labeled "JAN CRC-6V6Y" while Tube Two is labeled "JAN CRC-6V6

Transconductance measured 49/50 for Tube One and 50/50 for Tube Two (RCA-LABELED)

Sperry-BRANDED (SPL) 6V6GT output tubes was tested on our Maxi-Matcher 2 in Real World conditions with 400 volts on the plates and a bias of -36 volts for shorts

These tubes test poorly but should work in many applications

new in box RCA 6AV5 tubes tested to spec on our Paul Hart-calibrated TV7/U

even though they test on the cusp

dimpled sheet getters

respectively and bottom

These four milspec Sylvania 5Z4 rectifier tubes were tested on our Paul Hart-calibrated TV7/U for shorts

This new old stock-testing RCA clear top