ETL Systems Alto ALT-G1S-S3-106 S-Band Variable Gain Amplifier 850–2450 MHz

ETL Systems Alto ALT-G1S-S3-106 S-Band Variable Gain Amplifier 850–2450 MHz

The ETL Systems Alto ALT-G1S-S3-106 is a variable gain amplifier module operating from 850–2450 MHz. Designed for a compatible GENUS 1U chassis, it provides adjustable gain, positive slope compensation, and high linearity for satellite communications and RF distribution systems.

The model-specific RF table specifies a nominal 0–38 dB gain range with 0.25 dB adjustment steps. Slope control provides 0–8 dB compensation with a pivot point at 2450 MHz, supporting correction of frequency-dependent cable loss.

At maximum gain, the module provides an output P1dB of +23 dBm typ. and an OIP3 of +32 dBm typ. Specified gain flatness is ±0.6 dB across the full frequency range and ±0.2 dB over any 36 MHz.

Each hot-swappable amplifier occupies one slot in a compatible GENUS 1U chassis. Local and remote monitoring and control are provided through the selected chassis platform.

Model: ALT-G1S-S3-106
Product Type: Variable gain RF amplifier module
Frequency Range: 850–2450 MHz
Chassis Compatibility: GENUS 1U; one slot per module
RF Connector Options: 50Ω SMA or N-type
Gain Range: Nominal 0–38 dB; ±2 dB at minimum and maximum settings, per model-specific RF table
Gain Step Size: 0.25 ±0.15 dB
Slope Control: 0–8 dB; pivot at 2450 MHz; steps of 1 ±0.25 dB
Gain Flatness: ±0.6 dB full band; ±0.2 dB over any 36 MHz
Output P1dB: +23 dBm typ.; minimum +20 dBm at 850–2150 MHz and +19 dBm above 2150 MHz, at maximum gain
OIP3: +32 dBm typ.; +30 dBm minimum, at maximum gain
OIP2: +44 dBm typ.; +40 dBm minimum
Input / Output Return Loss: Input 18 dB typ., 14 dB minimum; output 16 dB typ., 14 dB minimum
Isolation: 60 dB typ.; 50 dB minimum, with amplifier modules set to equal gain
Control / LNB Power: Local and remote through compatible chassis; no LNB powering
MTBF / Weight: Greater than 150,000 hours per module; less than 0.35 kg typ.

Key Features

• Wide RF coverage from 850–2450 MHz.

• Fine gain adjustment in nominal 0.25 dB steps.

• Positive slope compensation for frequency-dependent cable loss.

• High linearity at maximum gain.

• Choice of 50Ω SMA or N-type RF interfaces.

• Hot-swappable, single-slot module with chassis-based monitoring and control.

• Module operating rating: 0°C to +50°C with up to 8 modules, or 0°C to +45°C with up to 16 modules, subject to chassis limits.

This listing covers one amplifier module. The compatible GENUS chassis, RF cables, and other accessories are sold separately unless included in the quoted configuration. Indoor operation requires a compatible parent GENUS chassis. Confirm the connector configuration, gain range, and noise figure when requesting a quotation; the supplied datasheet contains conflicting gain and noise-figure information.