Matched Pair RCA / Cunningham 6F5 Vacuum Tubes Compact Disk CD 48 and 48 where minimum

48 and 48 where minimum (65%) is 30 and 100% is 47

TV7/U readings are in (parenthesis)

totally unsuited for use in guitar amps or any other vibratory environment

This lot of two GE 6L7 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

Matched Pair RCA / Cunningham 6F5 Vacuum Tubes Compact Disk CD 48 and 48 where minimumThis matched pair of Cunningham RCA 6F5s were tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas and both measured 33 where minimum (65%) is 25. These tubes were made in the same factory and come from that cusp in time after the RCA buyout of Cunningham. 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