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 GU-34B 
 POWER TRANSMITTING TETRODE
 
The GU-34B-1 tetrode is used for wideband power amplification at frequencies up to 250 MHz in RF equipment.
GENERAL Cathode: indirectly heated, oxide-coated. 
Envelope: glass-to-metal

CHARACTERISTICS

Anode Dissipation ....................... 650W
Screen Dissipation ....................... 15 W
Grid Dissipation ........................... 1.5 W
Frequency for Max. Ratings ......... 250 MHz
Cathode ...................................... Oxide coated
Heater voltage ............................. 12.6 V
Heater current ............................. 4 A
Transconductance at Ua= 650 V; 
Ug2 = 500 V; Ia = 1 A ...............
70 mA/V

Capacitance
     Input ......................................
     Output ...................................
     Feed-through .........................


<85 pF
<11 pF
<0.1 pF
Max. Seal and Envelope 
Temperature ...............................
150° C
Maximum Length ......................... 126 mm
Maximum Diameter ..................... 94 mm
Weight (approximate) .................. 1 k g
Operating Position ....................... Any
Blower ........................................ 80 m3/h

 

 

 

Class of
Operation		 Type of Service Max. Ratings Typical Operation (grid-driven)
Anode
Voltage,
kV		 Screen
Voltage,
V		 Cathode
Current,
A		 Anode
Voltage,
kV		 Screen
Voltage,
V		 Anode
Current,
A		 Output
Power
W
AB1 RF Linear Amplifier at
250 MHz		 2.5 500 0.7 1.8 400 0.5 >400


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