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Model 1528 |
Temperature controlled design for "key-down" operation over a wide frequency range. Newly engineered for coverage of any new or expanded hf amateur bands within FCC amplifier rules. Also features wide frequency coverage for MARS, and other services authorized for this type of amplifier.
 | 2 kW PEP 1 kW CW, RTTY, SSTV operation-all modes, full rated input, continuous duty cycle. |
| 160-10’ meter amateur band coverage, plus expanded ranges for any future hf band expansions or additions within FCC rules. These ranges also include increased coverage for MARS, embassy, government, or other such services. |
| The Drake L-7 utilizes a pair of Eimac 3-500 Z triodes for rugged use, and lower replacement cost compared to equivalent ceramic types. Tubes are included. |
| Accurate built-in rf wattmeter, with forward/reverse readings, is switch selected. Calibrated 300/3000 watt scales. |
| Temperature controlled two speed fan is a high volume low noise type and offers optimum cooling. |
| Adjustable exciter agc feedback circuitry permits drive power to be automatically controlled at proper levels to prevent peak clipping and cw overdrive. Front panel control. |
| By-pass switching is included for straight through, low power operation without having to turn off amplifier. |
| Bandpass tuned input circuitry and 50 ohm input impedance for low distortion. |
| Amplifier is comprised of two units-rf deck for desk top and separate power supply |
| Operates from 120/240 V ac, 50/60 Hz primary line voltage |
DRAKE L7 SPECIFICATIONS
| Frequency Coverage: Ham bands 160 through 15 meters’. Non-amateur frequencies between 6.5 and 21.5 MHz may be covered with some modification of the Input circuit. 10 meter coverage available only on export units. | ||||
| Plate Power Input: 2000 watts PEF on SSB and AM 1000 watts dc on CW, RTTY, and SSTV. | ||||
| Drive Power Requirements: 100 watts PEP on SSB and 75 watts on CW, AM, | ||||
| Input Impedance: 50 ohms (Bandpass tuned input) | ||||
| Output Impedance: Adjustable pi-network matches 50 ohm line with | ||||
| SWR not to exceed 2:l. | ||||
| Inter modulation Distortion Products: In excess of 33dB | ||||
| Wattmeter Accuracy: 300 watts forward and | ||||
| Power Requirements: 240 volts 50-60 hertz 15 amperes, or 120 volts 50-60 hertz 30 amperes. | ||||
| Tube Complement: TWO | ||||
| Dimensions:
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| Weight:
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*Export model includes coverage of the 10-mete: Ham Band.
(c) QST january 1981 - p 44 10 Meter Adaptation For Drake L7
