Matched Pair General Electric GE 6BL7 6BL7GTA Vacuum Tubes Valves NOS NIB May 16 2025 harp-shaped getters and anode radiators

harp-shaped getters and anode radiators for cooler operation and longer tube life

new in box National Union type 43 tubes tested to spec on our Paul Hart-calibrated TV7/U

EIA Factory Codes: RCA livery

OUR SHIPPING RESPONSIBILITY ENDS WHEN THE PARCEL IS ACCEPTED AND SCANNED BY THE US POSTAL SERVICE

Matched Pair General Electric GE 6BL7 6BL7GTA Vacuum Tubes Valves NOS NIB May 16 2025 harp-shaped getters and anode radiatorsThis new old stock, new in box matched pair of GE 6BL7GTA dual triodes was tested on our Paul Hart calibrated TV7 U for shorts, gas and transconductance. There were no shorts or gas. Transconductance measured 44 45 for Tube One and 45 45 for Tube Two where minimum (65%) is 25 25 and 100% is 38. 5 38. 5. They have O getters; copper support rods; great flashing and 63 48 188 5 and 64 13 188 5 factory date codes, respectively. I played them in my Alan