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DC9DZ: Project Tsunami 50K – Power Amplifier (PA) using 4CX15000A

Data of DRESSLER Tsunami-50K-AT RF Linear Amplifier

Frequency bands all HF amateur bands 1.8 MHz to 29.7 MHz
Power supply 3 power supply transformers 20000 VA, 2500 VA & 1.5 VA
Plate voltage 12000 V at full output power
Screen voltage 1500 V stabilized
Grid voltage - 385 V +/- 30 V regulated
Filament 6.3 V / 160 A
Input SWR 160
17
m – 20 m
m – 10 m
< 1.5 : 1
< 3.0 : 1
Gain (1.8 – 29.7 MHz) 21.8 dB
Amplification Input power Output power  
Measured with a Bird Power Meter, 471200 & 4715. 10 W
20 W
40 W
80 W
120 W
160 W
200 W
240 W
280 W
320 W
340 W
  1.5 KW
3.0 KW
6.0 KW
12.0 KW
18.0 KW
24.0 KW
30.0 KW
36.0 KW
42.0 KW
48.0 KW
51.0 KW
 
Input SSB Signal 20% of full 1.5 KHz Modulation
on / off Ratio 1:4, Interruptions: 30 Hz
Output limited by Software RTTY / CW / SSB:   12 KW / 20 KW / 55 KW
Harmonic Output 50 dB below rated output
IMD 33 dB or better
Tube Eimac 4CX15000A
Input network 1:9 Transformation, 450 Ohm, 500 W HF Resistor, Tube Input Reactance Compensation & Neutralization for each Band
Output network Roller inductor 22 uH, Vacuum Caps: 250 pF var. / 15 KV + 330 pF fixed + 1000 pF / 3.5 KV + 1 nF fixed
Computer control Plate current (every 5 msec), SWR, all switching functions,
no relais switching under power conditions, soft start inrush, 10 sec delay time for full power, 2 speed turbine blower

Well regulated screen and grid supply for +ve and -ve currents as well as current limiting to protect the tube and minimize the IMD. It is impossible to override the screen and grid dissipation at any working conditions.
Auto Tune With CI-V (ICOM) interface (or similiar) from the transceiver: Complete auto tune on all HF amateur bands. Normal time for changing frequency: 1 second; Changing band: 2–4 seconds
Metering Output, SWR, Plate current, Plate voltage, Screen & Grid current / voltage
Housing High quality black eloxial aluminia
Line Support 3 PHS 400 V / 30 A
Dimension 489w x 556h x 548d mm³
Weight 148 kg
Price Auto Tune by CI-V (ICOM) Interface
Remote Control Unit with optical cable 30m
Electronic Stabilization of heating voltage
SSB Tuning Aid
38800 €
3180 €
2870 €
120 €