Matched Pair Raytheon 6K6 6K6GT Vacuum Tubes Valves Black Plates Clear Bottle

Matched Pair Raytheon 6K6 6K6GT Vacuum Tubes Valves Black Plates Clear BottleThis matched pair of Raytheon black plate, clear glass 6K6GT tubes was tested on our Maxi Matcher tube tester with 325 volts on the plates and a bias of 36 volts. Tube One drew 21 milliamps' plate current while Tube Two drew 22. 4. Transconductance was 1620 for Tube One and 1730 for Tube Two where new nominal is within one standard deviation of 1900. These tubes have tall bases; black plates; clear bottles and bottom, D getters. As I write, I am

The dust jacket is pretty nice

I am playing them in my Mini Mite 2013 (with adapters

Transconductance readings are 46

three horizontal holes underneath and parallel to the plates' short axes and excellent flashing

67 and 70 where minimum (65%) is 50

Tube Three: 40/2120 and

(New US-made 6L6GCs typically test with plate current from the low 20s to mid 30s with transconductance from 2200 micromhos or so

It has a diamond in its base with a 135 code

This is a testament to their high emissions

This new old stock-testing nickel / pewter plate Ken-Rad industrial 5814 dual triode was tested on our Paul Hart-calibrated TV7/U for shorts

they can put out as much as 2A3s and fell into disfavor because of socket supply issues

For sale are two new old stock