Amplifier Research 125A400

| Attribute | Value |
|---|---|
| Frequency Range | 10 kHz – 400 MHz |
| Output Power | 125 Watts CW minimum |
| Gain | 50 dB minimum |
| Input Power for Rated Output | 0 dBm typical |
| Input Impedance | 50 Ohms nominal |
| Output Impedance | 50 Ohms nominal |
| Harmonics and Spurious Signals | -10 dBc or less at rated output |
| Power Requirements | 220 VAC, single phase, 50/60 Hz, 1500 VA |
| Cooling Method | Forced air cooling |
| Connectors | Type N female input and output connectors |
Amplifier Research 125A400 Options:
- 125A400 - 125A400 - Type N female RF Input (front), Type N female RF Output (front)
- 125A400 - 125A400M1 - Type N female RF Input (rear), Type N female RF Output (rear)
| Model | 125A400 |
|---|
The Amplifier Research 125A400 is a solid-state, air-cooled, broadband amplifier offering a minimum of 125 watts across 10 kHz–400 MHz with 51 dB gain. It features push-pull LDMOS circuitry for low distortion, excellent stability, and precise performance across a wide range of RF applications.
Equipped with a Digital Control Panel with LCD touchscreen and rotary knob, the 125A400 provides accurate forward/reflected power monitoring, gain control, pulse input capability, and full remote operation via GPIB, RS-232, Ethernet, fiber optic, and USB interfaces.
Testwall can supply the used Amplifier Research 125A400, fully tested. With expert support and global delivery, Testwall ensures high-performance instrumentation with unmatched reliability and service quality. Please contact us directly if you need calibration or repair of the Amplifier Research 125A400.



