Matched Pair General Electric GE 6BL7 6BL7GTA Vacuum Tubes NOS NIB TC-1018-A

Matched Pair General Electric GE 6BL7 6BL7GTA Vacuum Tubes NOS NIB TC-1018-AThis 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

wire snubbers for increased rigidity and lowered microphonics

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

mica snubbers for increased rigidity and lowered microphonics and excellent flashing

This lot of two US-made number 33 tubes was tested on our Paul Hart-calibrated TV7/U for shorts

crenelated mica spacers

There is some marking in the first twenty pages or so

Tube Two measured 10

new in box Mullard-MANUFACTURED

(New US-made 6V6s typically test with plate current from the mid-teens to mid-30s with transconductance from 2300 micromhos or so

new in box RCA 12D4 tubes tested to spec on our Paul Hart-calibrated TV7/U

This Hamilton quartz ladies' watch doesn't work and is missing its hour hand

Three are GE and two are Sylvania