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NR88 / CV1197 / RL18 triode

Size This valve measures 52x15mm overall and has a 3-pin base and two top connections.

This is a triode for operation as an oscillator at frequencies up to 600MHz.

Heater voltage 6.3V
Heater current 250mA
Max anode voltage 250V
Max anode dissipation 2.5W
Max heater cathode voltage 40V
Anode current * 7.5mA
Mutual conductance * 2.9mA/V
Anode impedance * 11.5k ohms
Capacitances
Cac max 0.69pF
Cgc mean 1.25pF
Cag mean 1.33pF

*: At Va=200, Vg=-3.3

 

The base connections are heater, cathode, heater, with the cathode being the central pin. The top connections are grid and anode, with the anode connection being marked with a red spot on the glass.

NR88 / CV1197

RL18
Quarter view