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Amplifier Research 350AH1 RF Power Amplifier; 350 watt CW, 10 Hz to 1MHz

Model Number: 350AH1

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Amplifier Research 350AH1

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  • Amplifier Research 350AH1


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Amplifier Research 350AH1, 350W 10Hz to 1MHz RF Amplifier

Model 350AH1 amplifier is a portable, self-contained, air-cooled, broadband, solid state amplifier unit designed for laboratory applications where instantaneous bandwidth, high gain and moderate power output are required. When used with an RF sweep generator, the 350AH1 will provide up to 350 watts of output power.

Housed in a stylish contemporary enclosure, the unit provides instantaneous power for typical applications such as magnetic susceptibility testing, 4–10 kHz requirement of CS114 of MIL-Std-461F, antenna and component testing, Watt-meter calibration and as a driver for higher power amplifiers. The 350AH1 is powered by a high efficiency switching supply, with autoranging AC input circuitry which will automatically accept voltages from 90 to 260 VAC in the 47 to 63 Hz frequency range. The RF amplifier stages are protected from overtemperature and over-current conditions by removing the DC voltage to them when a fault is detected. The digital display on the front panel indicates the operational status and any pending fault conditions when an over-temperature, over-current or power supply fault has occurred. The unit can be returned to normal operation when the condition has been cleared. The unit also includes digital control for both local and remote control of the amplifier. The RISC microprocessor controller board provides IEEE-488 (GPIB), USB, Ethernet and asynchronous full duplex RS-232 communication control of all amplifier functions.

Two 350AH1 amplifiers may be used together in a “bridged” output configuration by supplying the same signal to both amplifiers and using the internal signal inversion feature of one amplifier. The amplifier output grounds are connected and the load is placed across the two amplifier outputs.

Test Standards
  •  MIL-STD-461E/F
  • OPERATION: Class AB Linear
  • FREQUENCY RESPONSE: 10Hz–1 MHz instantaneously
  • POWER OUTPUT, CW (1.79 Ohm load): 350W min, 10Hz to 300kHz
  • POWER OUTPUT, Voltage Output (min): 25Vrms, 10Hz to 300kHz; 25 to 10Vrms, 300kHz to 1MHz
  • POWER OUTPUT, Current Output, Minimum: 14Arms, 10Hz to 300kHz; 350–55 watts, 300kHz to 1MHz
  • FLATNESS: ±1.0dB, 10Hz to 300kHz; ±4.0dB, 300kHz to 1MHz
  • GAIN (POWER): 47dB minimum, 10Hz to 300kHz; 39dB minimum, 300kHz to 1MHz
  • GAIN CONTROL RANGE: 15dB minimum
  • INPUT SIGNAL: 0 to 2Vrms
  • INPUT IMPEDANCE: 600Ω typical
  • OUTPUT IMPEDANCE: <1Ω typical
  • MISMATCH TOLERANCE: 100% of rated power without fail
  • MODULATION CAPABILITY: Will faithfully reproduce AM, FM, or pulse modulation appearing on the input signal
  • PRIMARY POWER: 90 to 260VAC; 47 to 63Hz, single phase, 1200W maximum
Standard Accessories Included
  • Calibration certificate
  • Manual
  • Power cord
  • All standard accessories
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