GU-88P

TRIODE

The GU-88P triode is used as a RF oscillator and a power amplifier in stationary general-purpose 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	640-720
Mutual conductance (at filament voltage 26 V, anode voltage 1 kV, peak grid voltages 200 and 600 V), mA/V	375-625
Static amplification factor (at filament voltage 26 V, anode voltages 1 and 2 kV, anode current 10 A)	36-55
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;
_____ anode-grid;
_ _ _ grid

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