15.5mm symbol tube manufactured by Nanchang

The QS30-37 is a clear glass symbolic nixie tube that can display the symbol "MHz" fro Megahertz, "KHz" for Kilohertz and "Hz" for Hertz. These are units used for frequency in electronics, therefore its likely this tube was developed and used in applications for electronic measurement.
Brand / Manfacturer Nanchang
Same Types
Likely Tyes
Symbol height in mm 15.5
Characters / Symbols MHz, KHz, Hz
Decimal point none
Base / Socket 0
Starting Voltage (typ) 170 V
Maintaining Voltage (typ) 0 V
Current per Segment 0mA
Reccomend Resistor tested at 10kOhm