ENI/E&I 1140LA Power Amplifier 9 kHz - 250 kHz

ENI/E&I 1140LA Power Amplifier
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E&I (formerly ENI) 1140L
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The 1140LA is a broadband solid state amplifier covering the frequency spectrum from 9 kHz to 250 kHz. It is rated at 1100 Watts of RF power with low harmonic and intermodulation distortion. Over 1500 watts of staturated power can be produced with increased distortion products from 100 KHz to 2 MHz. A quasi linear Class AB design, the ENI / E&I 1140LA will amplify inputs of AM, FM, SSB, pulse and any complex modulation signals. The amplifier has 55 dB gain, it is unconditionally stable and will not oscillate even with combinations of mismatched source and load impedance. It is protected against failure due to output load mismatch and/or overdrive.

RMS forward and reverse powers are monitored by a front panel meter. An integral power supply permits operation from 115/230 single phase AC power.


  • Load Power Measurement
  • Solid State Reliability
  • Forced Air Cooling


Output Power 1100 Watts
Frequency Range 9 kHz to 250 kHz
Gain 55 dB
Gain Variation ±1 dB
Drive Source Requirement Any signal generator, function generator, or oscillator capable up to +10 dBm into 50 Ω
Impedance 50 Ω
Reflective Power Tolerable up to 400 Watts
Input/ Output Connection BNC
Max Output Power 9 to 11 kHz: 1.2 kW
11 to 75 kHz: 1.6 kW
75 to 180 kHz: 1.5 kW
180 to 250 kHz: 1.1 kW