National Union NU 807 JAN-CNU-807 Vacuum Tube Milspec Musiques Originales These three US-made milspec VR-150

These three US-made milspec VR-150 / VT-139 / 0D3A tubes tested to spec in our Hickok 800

well-mastered

This lot of two new old stock

The Soldier Tir'd Of War's Alarms

One can adjust the time

National Union NU 807 JAN-CNU-807 Vacuum Tube Milspec Musiques Originales These three US-made milspec VR-150This new old stock TESTING National Union 807 output tube was tested on our Maxi Matcher 2 for shorts, gas and transconductance with 400 volts on the plates and a bias of 48 volts. There were no shorts or gas. Plate current draw was 20 milliamps while transconductance measured 2450 micromhos. (New 807s typically test from the mid teens to mid 30s with transconductance from 2200 micromhos). I am playing it now in my Musical Paradise 301 MK 3 (with an