Matched Pair RCA 5879 Vacuum Tubes NOS-Testing Gray Coated Glass 5 dB / -86

5 dB / -86

This matched pair of Raytheon black plate

9 for Tube Two

It 66-26 date codes and steel or tantalum plates

47 and 48 where minimum (65%) is 40

Matched Pair RCA 5879 Vacuum Tubes NOS-Testing Gray Coated Glass 5 dB / -86This new old stock TESTING, perfectly matched pair of RCA 5879 tubes was tested on our Paul Hart calibrated TV7. for shorts, gas and transconductance. There were no shorts or gas. Both tubes measured 42 where minimum (65%) is 25 and 100% is 35. These tubes have top, O getters; steel support rods and outstanding flashing. 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"