6L6 6L6GA tube Brimar power tubes black coated British valve army test strong
2 tubes 6L6GA Brimar British made
tested twice
test results with tube tester TV7
tube 1 = 40 (reference good at 46)
tube 2 = 42 (reference good at 46)
Test with Tube tester Funke W19S
tube 1 = 76mA (reference good at 18mA)
tube 2 = 84mA (reference good at 18mA)
rare tubes strong emission
box 180