NEC DTU-70, Instruction Manual

Page: 51 / 80

GWP-G22996
3 - 3
3-2 Power Amplifier Section
3-2-1 UX5000QF Power Amplifier
The UX5000QF PA is a Doherty, high power transistorized RF amplifier.
The maximum output of this amplifier is 1560W average power, and the unit gain is
approximately 77.9dB. The gain can continuously be varied by the input variable
attenuator (LEVEL ADJ).
Table 3-2 Electrical characteristics of UX5000QF PA
Item Description
Circuitry
Transistor
The number of cascade transistor stage
19
3
External configuration
Dimension
Weight
Input connector
Output connector
Power supply connector
Control connector
Current checking
Type of unit
Cooling system
504(W)
×
105 (H)
×
762 (D) (*Include Front Panel)
Approx. 34kg (*Include Front Panel)
BNC-J, front
WX-39D plug-in, rear
Plug, rear
Plug, rear
Plug, rear
Front-operated plug-in type
Jet water cooling & Cold plate cooling
Protective devices
Over input protection
Temperature protection
Load variation coverage
RF power output
RF power input
Gain
Power supply voltage
Power supply
+
1dB
•
Automatic output interruption at preset temp.
•
Non-abnormal operation in short-time open or
short circuit.
1560W, average
25µW, average
77.9dB
380/400/415V AC, 3phase
120A 50V (build in main body)
Channel coverage 470
∼
862MHz
Frequency response Better than
±
0.5dB, within any channel band
Gain stability Better than
±
0.5dB
Power consumption Approx. 5,000W