Data of DRESSLER Baby RF Linear Amplifier
| Frequency bands | all HF amateur bands | 1.8 MHz to 29.7 MHz | ||
| Power supply | 3 power supply transformers | 2330 VA, 200 VA & 1.5 VA | ||
| Plate voltage | 3250 | V | at full output power | |
| Screen voltage | 325 | V | stabilized | |
| Grid voltage | - 57 | V +/- 15 V | regulated | |
| Filament | 6 | V / 9 A | ||
| Input SWR | 160 12 |
m – 15 m m – 10 m |
< 1.25 : 1 < 1.45 : 1 |
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| Gain | (1.8 – 29.7 MHz) | 15.2 dB | ||
| Amplification | Input power | Output power | ||
| Measured with a Bird Power Meter and Bird dummy load on 7.1 MHz. | 5 W 10 W 20 W 30 W 40 W 50 W 60 W 70 W |
170 W 340 W 670 W 1000 W 1330 W 1650 W 2000 W 2350 W |
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| Input SSB Signal | 33% of full 1 KHz Modulation on / off Ratio 1:2, Interruptions: 20 Hz |
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| Harmonic Output | 50 dB below rated output | |||
| IMD | 35 dB or better | |||
| Tube | Eimac 4CX1000A (or optionally Eimax 4CX1400B with max. output power 1700 W | |||
| Input network | 50 Ohm, 100 W HF Resistor, 5 pol. Chebychev Low Pass Filter |
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| Output network | Roller inductor 21 uH & 2 motorized vacuum capacitors 500 pF / 5 KV & 2.5 nF / 5KV | |||
| Computer control | All switching functions, no relais switching under power conditions, soft start inrush, 200 sec delay time for full power, turbine blower with 2 speeds. 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 | Display of all parameters – no switching | |||
| Housing | High quality black eloxial aluminia | |||
| Dimension | 508w x 165h x 440d mm³ | |||
| Weight | 38.5 kg | |||
