6BM8 unbranded Blackburn code Vacuum Tube C, TV-7D Tested – will combine ship
Blackburn code. Vacuum Tube. sections of a single tube. Within 3% I consider to be ‘Balanced’. Heat Radiators. Dissi milar Sections Tested at 82/61. Clean tubes will radiate heat better & operate cooler.
6BM8 unbranded Blackburn code Vacuum Tube B, TV-7D Tested – will combine ship
Blackburn code. Vacuum Tube. sections of a single tube. Within 3% I consider to be ‘Balanced’. Heat Radiators. Dissi milar Sections Tested at 93/68. Clean tubes will radiate heat better & operate cooler.
