Deutsche Version - German Version German Version

DC9DZ: Project Tsunami 12K – Power Amplifier (PA) using GU78b

Data of DRESSLER Tsunami-12K Auto Tune RF Linear Amplifier

Frequency bands all HF amateur bands covered continously 1.8 MHz to 29 MHz
1 Net-Phase 230 or 240 VAC 3 power supply transformers 7000 VA, 282 VA & 2.8 VA
Plate voltage 5930 VDC at full output power
3 Net-Phases 3 x 400 VAC 3 power supply transformers 5000 VA, 282 VA & 2.8 VA
Plate voltage 4050 VDC at full output power
Screen voltage 345 V stabilized
Grid voltage - 85 V +/- 15 V regulated
Filament 27 V / 3.7 A
Input SWR 160
12
10
m – 15 m
m
m
< 1.2 : 1
< 1.3 : 1
< 1.45 : 1
Gain (1.8 – 29 MHz) ca 18 dB
Amplification Input power Output power  
Max. Output with Tsunami 12K-AT in mode SSB: 12KW
There is absolute no time limit for a carrier output until 5500 W (CW: 9000 W)
Harmonic Output 50 dB below rated output
Intermodulation distortion (IMD3) - 44 dB @ 25% power output
- 39 dB @ 50% power output
- 35 dB @ 100% power output
Using SDR with predistortion mode: -55 dB @ full output
Tube Svetlana GU-78b
Input network 50 Ohm, 200 W HF Resistor, 5 pol. Chebychev Low Pass Filter
Output network Roller inductor 15 uH / 20 A, Vacuum Caps 8Comet): 5-500pF, 8 KV & 150-1500 pF, 4 KV + fixed Caps
Computer control of all switching functions No relay switching under power conditions, soft start inrush, 240 sec delay time for full power, turbine blower with two speeds

Stabilized screen and well regulated 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: 2–6 seconds
RF-Connectors Output:
Input:
APD-Monitor:
7/16 connector
SO-239
SMA connector
Metering Output, SWR, Plate current, Plate voltage, Screen & Grid current
Line Support One phase 230 VAC / 40 A (SSB: 32 A)
Housing High quality black eloxial aluminia
Dimension 618w x 187h x 565d mm³
Weight 65 kg
Price T12K-AT 230 or 240 VAC
T12K-AT 3 x 400 VAC

Spare Tube GU-78b
CI-V cable 3 m length
Remote Control Unit with optical cable 30m
SSB Tuning Aid
11980 €
12980 €

890 €
3180 €
60 €
145 €
Shipping costs Outside Europe (Air freight)
Europe
Germany
945 €
390 €
230 €
Guarantee Four years on amplifier, one year on tube (via tube manufacturer)
Click image to enlarge
Click image to enlarge
Click image to enlarge
Click image to enlarge
Click image to enlarge
Click image to enlarge
Click image to enlarge
Click image to enlarge