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Gu 50 PDF

The GU-50 pentode is used as an RF oscillator and power amplifier in ham radio equipment. It has a indirectly heated cathode and glass envelope. It can operate between -10 to +55 degrees Celsius and 98% relative humidity. Key parameters include a heater voltage of 12.6V, mutual conductance of 3-5.5mA/V, and maximum output power of 55W at 800V anode voltage and 150mA anode current. Operating limits include an anode voltage between 600-1000V depending on wavelength and a maximum envelope temperature of 200 degrees Celsius.

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1K views2 pages

Gu 50 PDF

The GU-50 pentode is used as an RF oscillator and power amplifier in ham radio equipment. It has a indirectly heated cathode and glass envelope. It can operate between -10 to +55 degrees Celsius and 98% relative humidity. Key parameters include a heater voltage of 12.6V, mutual conductance of 3-5.5mA/V, and maximum output power of 55W at 800V anode voltage and 150mA anode current. Operating limits include an anode voltage between 600-1000V depending on wavelength and a maximum envelope temperature of 200 degrees Celsius.

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ade abang
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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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LY1DQ ham radio resources LY1DQ@mrtv.

lt

PENTODE GU-50
The GU-50 pentode is used as a RF oscillator and power amplifier in the metric wavelength range in RF
equipment.

GENERAL

Cathode: indirectly heated, oxide-coated. Envelope: glass, no-base. Height: at most 93.5 mm. Diameter:
at most 45.3 mm. Mass: at most 100g.

OPERATING ENVIRONMENTAL CONDITIONS

Ambient temperature, °C -10 to +55


Relative humidity at up to +25 °C, % 98
CONNECTION
OF ELECTRODES
BASIC DATA Electrical Parameters WITH LEADS

Heater voltage, V 12.6


Heater current, A 0.6-0.85
Mutual conductance (at anode voltage 800 V, 1 - cathode; 2 - grid1;
3 - grid2; 4, 8 - heater;
grid 2 voltage 250 V, grid 1 voltage increment 5 V, 5 - grid3; 6 - anode;
7 - screen
anode current 50 mA), mA/V 3-5.5
Bias voltage at operating point, V 25-55
Penetration factor of grid 1 relative to grid 2, % 16-26
Interelectrode capacitance, pF:
input, at most 13-15
output, at most 10.3
transfer, at most 0.1
Output power, W, max.:
at anode voltage 800 V, grid 2 voltage 250 V,
grid 1 voltage -100 V, anode current,
at most 150 mA 55
over 1750 h of service 40

Limit Operating Values

Heater voltage, V 11.3-13.9


Anode voltage at different wavelengths, V:
6.5 m or longer 1000
6.5-4.5 m 800
4.5-3.5 m 700
3.5-2.5 m 600
Grid 2 voltage, V 250
Voltage between cathode and heater, V 200
Dissipation, W:
anode 40
grid 2 5
grid 1 1
Envelope temperature, °C 200

Created by LY3NML
LY1DQ ham radio resources LY1DQ@mrtv.lt

Averaged Anode-Grid 2 Characteristic


Curves: U1 = 12.6 V; Ug2 = 250 V; Ug3 = 0

Averaged Grid 2-Anode Characteristic


Curves: U1 = 12.6 V; Ug2 = 250 V; Ug3 = 0

Averaged Characteristic Curves:


U1 = 12.6 V; Ua = 800 V; Ug3 = 0
________ anode-grid
_ _ _ _ _ _ grid 2

Created by LY3NML

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