Data of DRESSLER Katana-12K3 RF Linear Amplifier
Frequency bands | all HF amateur bands | 1.5 MHz to 29.7 MHz | ||
Power supply | 3 power supply transformers | 4600 VA (3PHS), 800 VA (1PHS) & 1.5 VA | ||
Plate voltage | 3750 | V | at full output power | |
Screen voltage | 330 | V | stabilized | |
Grid voltage | - 69 | V +/- 10 V | regulated | |
Filament | 27 | V / 7.5 A | ||
Input SWR | 160 17 |
m – 15 m m – 10 m |
< 1.35 : 1 < 1.50 : 1 |
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Gain | (1.5 – 29.7 MHz) | 20.0 dB | ||
Amplification | Input power | Output power | ||
Measured with a Bird Power Meter, Model KH1, PEP | 10 W 20 W 30 W 40 W 50 W 60 W 70 W 80 W 90 W 100 W 110 W 120 W |
1000 W 2000 W 3000 W 4000 W 5000 W 6000 W 7000 W 8000 W 9000 W 10000 W 11000 W 12000 W |
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Input SSB Signal | 20% of full 1.5 KHz Modulation on / off Ratio 1:4, Interruptions: 30 Hz |
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Output limited by Software | RTTY / CW / SSB: 3000 W / 6500 W / 13000 W | |||
Harmonic Output | 50 dB below rated output | |||
IMD | - 43 dB @ 25% power output - 37 dB @ 50% power output - 33 dB @ 100% power output |
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Tube | Two Svetlana GU-78b | |||
Input network | 50 Ohm, 200 W HF Resistor, 5 pol. Chebychev Low Pass Filter, switched in 2 domains |
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Output network | Roller inductor: 24 uH, Caps: 250 pF var. + 390 pF fixed / 4.5 KV & 1000 pF var. / 2 KV | |||
Computer control | Function parameters every 5 msec, SWR, all switching functions, no relais switching under power conditions, soft start inrush, 240 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. |
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Metering | Output, SWR, Plate current, Plate voltage, Screen & Grid current / voltage, 12 V, 24 V |
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Housing | High quality black eloxial aluminia | |||
Dimension | 548w x 159.5h x 560d mm³ | |||
Weight | 71 kg | |||
Price | 10980 €optional SSB Tuning Aid 120 € |