GU88P
TRIODE
The GU88P triode is used as a RF oscillator and a power amplifier in stationary generalpurpose RF equipment.
GENERAL
Cathode: directly heated, carbonized tungsten.
Envelope: metal ceramic.
Cooling: evaporation for anode, forced air for other elements of envelope.
Height: at most 771 mm.
Diameter: at most 244.5 mm.
Mass: at most 55 kg.
BASIC DATA Electrical Parameters 

Filament voltage (AC or DC), V  26 
Filament current, A  640720 
Mutual conductance (at filament voltage 26 V, anode voltage 1 kV, peak grid voltages 200 and 600 V), mA/V  375625 
Static amplification factor (at filament voltage 26 V, anode voltages 1 and 2 kV, anode current 10 A)  3655 
Output power at frequencies up to 22 MHz, kW, at least  500 
Interelectrode capacitance, pF:  
input, at most  500 
output, at most  7.5 
transfer, at most  200 
Limit Operating Values  
Filament voltage, V  26 
Filament starting current, peak value, A  1,150 
Maximum anode voltage (DC):  
without anode modulation, kV  12 
with anode modulation (a most 1), kV  11 
Negative grid voltage, absolute value, V  700 
Dissipation, kW:  
anode  250 
grid  7 
Operating frequency, MHz  10 
Envelope temperature at hottest point, °C  180 
Averaged Characteristic Curves:
U_{f} = 26V;
_____ anodegrid;
_ _ _ grid