Amplifier Research 120S1G4

| Attribute | Value |
|---|---|
| Frequency Range | 0.8 GHz – 4.2 GHz |
| Minimum Output Power | 120 Watts CW |
| Gain | 50 dB minimum |
| Gain Flatness | ±3 dB maximum |
| Input for Rated Output | 0 dBm maximum |
| Input VSWR | 2.0:1 maximum |
| Output VSWR | 2.0:1 maximum |
| Noise Figure | 12 dB typical |
| Power Requirements | 220 VAC, Single Phase, 50/60 Hz |
| Cooling Method | Forced Air Cooling |
Amplifier Research 120S1G4 Options:
- 120S1G4 - M1 - Rear-mounted N Female RF input and output connectors, with instrument case
- 120S1G4 - M2 - Front-mounted N Female RF input and output connectors, rack mount (no instrument case)
- 120S1G4 - M3 - Rear-mounted N Female RF input and output connectors, rack mount (no instrument case)
| Model | 120S1G4 |
|---|
The Amplifier Research 120S1G4 is a solid state, broadband amplifier delivering 120W output across 0.8–4.2 GHz. It offers 51 dB minimum gain, excellent linearity, and ±1.5 dB flatness typical. Designed for benchtop or rack use, it features digital displays, protection circuits, and multiple remote interfaces including IEEE, RS-232, USB, and Ethernet.
With its low spurious signals, high reliability, and capability to handle AM, FM, and pulse modulation, the 120S1G4 is ideal for wireless component testing, EMC applications, and multi-band communication system evaluations.
Testwall can supply the used Amplifier Research 120S1G4, 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 120S1G4.




