• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Russia tube markings

NiaDebesis

Member
2019-11-19 9:15 am
Hi,

Just asking, anyone know what this symbol means?
 

Attachments

  • IMG_20191119_202044.jpg
    IMG_20191119_202044.jpg
    347.3 KB · Views: 143