Data of DRESSLER Katana-8K Ultra RF Linear Amplifier
| Frequency bands | all HF amateur bands | 1.8 MHz to 29.7 MHz | ||
| Power supply | 2 power supply transformers | 5100 VA & 2.5 VA | ||
| Plate voltage | 4500 | V | at full output power | |
| Screen voltage | 345 | V | stabilized | |
| Grid voltage | - 78 | V +/- 10 V | regulated | |
| Filament | 27 | V / 3.7 A | ||
| Input SWR | 160 | m – 10 m | < 1.1 : 1 | |
| Gain | (1.8 – 29.7 MHz) | 19.0 dB | ||
| Amplification | Input power | Output power | ||
| Array Solutions Power Master, Accuracy: +/- 1.5% |
10 W 20 W 30 W 40 W 50 W 60 W 70 W 80 W 80 W 100 W |
800 W 1600 W 2400 W 3200 W 4000 W 4800 W 5600 W 6400 W 7200 W 8000 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 limit | There is absolutely no time limit for a carrier output power until 3000 W (CW: 6000 W) | |||
| Harmonic Output | 50 dB below rated output | |||
| IMD | - 43 dB @ 25% power output - 37 dB @ 50% power output - 33 dB @ 100% power output Using SDR with predistortion mode: - 50 dB @ full output |
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| Tube | Svetlana GU-78b | |||
| Input network | 50 Ohm, 200 W HF Resistor, 5 pol. Chebychev Low Pass Filter |
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| Output network | Inductor: 16 uH, Caps: 250 pF var. 4.5 KV & 1000 pF var. 2 KV + fixed caps | |||
| Computer control | Plate current (every 5 msec), SWR, all switching functions, no relais switching under power conditions, soft start inrush, 180 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 |
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| Housing | High quality black eloxial aluminia | |||
| Dimension | 508w x 157.5h x 548d mm³ | |||
| Weight | 48 kg | |||
| Price | 6995 EUR | |||
