Data of DRESSLER Broadcast-4K RF AM Linear Amplifier
| Frequency band | complete 49 m band | 5500 kHz to 7300 kHz | ||
| Power supply | 2 power supply transformers (230 V primary) | 7000 VA & 1.5 VA | ||
| Plate voltage | 3150 | V | at full output power | |
| Screen voltage | 330 | V | stabilized | |
| Grid voltage | - 70 | V +/- 10 V | regulated | |
| Filament | 27 | V / 7.5 A | ||
| Input SWR | < 1.1 | : 1 | ||
| Gain | 21 | dB | ||
| Amplification | Input power | Output power | ||
| 30 W | 4000 W | |||
| There is absolute no time limit for a carrier output power of 4000 W | ||||
| Harmonic Output | 50 dB below rated output | |||
| IMD | 36 dB or better | |||
| Tube | Two Svetlana GU-78b | |||
| Input network | 50 Ohm, 200 W HF Resistor, 5 pol. Chebychev Low Pass Filter |
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| Output network | Inductor: 3.5 uH, Caps: 250 pF var. / 1000 pF var. | |||
| 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 | 548w x 159.5h x 512d mm³ | |||
| Weight | 58 kg | |||
| Supply Voltage | 230 V / 30 A CEE | |||
| Price | 8180 € | |||
