Hello, how can I conduct a test on a PX25 tube with a TV-7D/U tester?
The tube chart contains test data for a CV1040 (which is identical to the PX25) but I can't figure out where and how to place the tube.
Do I need a special adapter for the European B4 it to fit into the UX4 base?
Any help would be appreciated.
The tube chart contains test data for a CV1040 (which is identical to the PX25) but I can't figure out where and how to place the tube.
Do I need a special adapter for the European B4 it to fit into the UX4 base?
Any help would be appreciated.
I found this interesting page which has a special socke for B4 and UX4 tubes (footprints 45 degrees to each other), and the difference can be seen. Apparently UX4 is normally 5V filament, and B4 4V.
Socket-Yamamoto.htm
Socket-Yamamoto.htm