CK1903 Engineering Sample

ca. 10mm symbol tube manufactured by Raytheon

The CK1903 is a clear glass endview tube manufactured by Raytheon. It can display the plus and minus sign. This tube is an engineering sample and is very rare, there is also no infomormation available, if there is a series CK1903 tube.
Brand/ManfacturerRaytheon
Same Types
Likely Tyes
Symbol height (mm)ca. 10
Display+,-
Decimal pointnone
BaseSK-136
Starting Voltage (typ)tested at 170V V
Maintaining Voltage (typ)0 V
Current per Segment0mA
Reccomend Resistor0