Amplifier Research 125S1G4

| Attribute | Value |
|---|---|
| Frequency Range | 0.8 GHz – 4.2 GHz |
| Minimum Output Power | 125 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 |
| Harmonic Distortion | -10 dBc maximum at rated output |
| Power Requirements | 220 VAC, single phase, 50/60 Hz |
| Cooling | Forced air cooling |
Amplifier Research 125S1G4 Options:
- 125S1G4 - 125S1G4 - Standard: N Female connectors front-mounted (RF Input & Output), with instrument case, 44kg (97lbs), 50.3 x 30 x 61cm
- 125S1G4 - M1 - N Female connectors rear-mounted (RF Input & Output), with instrument case, 44kg (97lbs), 50.3 x 30 x 61cm
- 125S1G4 - M2 - N Female connectors front-mounted (RF Input & Output), rack mount (no instrument case), 33.1kg (73lbs), 48.3 x 26.7 x 61cm
- 125S1G4 - M3 - N Female connectors rear-mounted (RF Input & Output), rack mount (no instrument case), 33.1kg (73lbs), 48.3 x 26.7 x 61cm
| Model | 125S1G4 |
|---|
The Amplifier Research 125S1G4 is a portable, air-cooled, solid-state amplifier delivering 125 watts of RF power across 0.7–4.2 GHz with outstanding linearity and stability. It features push-pull circuitry, an advanced digital control panel, gain adjustment up to 15 dB, and extensive remote interfaces including GPIB, RS-232, USB, and Ethernet. With low spurious signals and harmonic distortion, it ensures reliable and precise RF performance for demanding applications.
Ideal for EMC testing, wireless communication systems, and driver amplifier applications, the Amplifier Research 125S1G4 supports AM, FM, and pulse modulation with excellent accuracy and minimal distortion. Its rugged design allows operation under any mismatch conditions without damage.
Testwall can supply the used Amplifier Research 125S1G4, 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 125S1G4.




