RCA Cunningham Number / Type 77 #77 Vacuum Tube Valve Mesh Plate

RCA Cunningham Number / Type 77 #77 Vacuum Tube Valve Mesh PlateThis RCA Cunningham number type 77 tube was tested on our Paul Hart calibrated TV7 U for shorts, gas and emissions. There were no shorts or gas. It measured 38 where minimum (65%) is 31 and 100% is 48. 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

D getter and ribbed

This new old stock-testing matched pair of Philips Miniwatt PCF80 / 9U8 tubes was tested on our Paul Hart-calibrated TV7 for shorts

Delco-BRANDED 6SK7 tested as good on our Paul Hart-calibrated TV7/U

new in box Sylvania 6JH6 tubes tested to spec on our Paul Hart-calibrated TV7/U

I just cleaned this four LP set on my VPI 16

horseshoe getters and excellent flashing

Tube One measured 63 while Tube Two measured 67 where minimum (65%) is 43

Transconductance measured 81/82 for Tube One and 84/83 for Tube Two where minimum (65%) is 50/50 and 100% is 77/77

new in box Raytheon 6BL8 / ECF80 tube tested to spec on our Paul Hart-calibrated TV7/U

likely Tung-Sol-MANUFACTURED) measured 31 while Tube Two (no silkscreening 6AK5-LABELED

This pressing has light to lightly-moderate surface noise audible in quiet passages and barely-audible in voice-level passages

new in box GE 6LJ6A / 6LH6A tube tested to spec on our Paul Hart-calibrated TV7/U