ETL Systems Alto ALT-G2R-L1-131 L-Band Redundant Variable Gain Amplifier 850–2150 MHz

ETL Systems Alto ALT-G2R-L1-131 L-Band Redundant Variable Gain Amplifier 850–2150 MHz

The ETL Systems Alto ALT-G2R-L1-131 is an L-band redundant amplifier module operating from 850–2150 MHz. Designed for a compatible GENUS 2U chassis, it combines variable gain, positive slope compensation, low noise, and high linearity for RF signal conditioning in redundant amplifier systems.

In the specified 1+1 configuration with the SWF-G2R-SX-134-S5S5 switch, the system provides nominal gain adjustment from 10–40 dB in 0.25 dB steps. Slope control offers 0–6 dB adjustment with a pivot point at 2150 MHz, supporting compensation for frequency-dependent signal loss.

Three operating modes allow performance to suit the application. Power Mode adjusts input attenuation to prioritize linearity as gain is reduced. Noise Mode adjusts output attenuation to prioritize noise figure, with reduced linearity at lower gain. Compromise Mode applies attenuation equally at the input and output.

At maximum gain, the specified redundant configuration provides a noise figure of 9 dB typ., an output 1 dB compression point of +29 dBm typ., and an output third-order intercept point of +38 dBm typ. Each hot-swappable amplifier module occupies one chassis slot. Local and remote control are provided through the selected GENUS chassis.

Model: ALT-G2R-L1-131
Product Type: L-band amplifier module for redundant configurations
Frequency Range: 850–2150 MHz
Chassis Compatibility: GENUS 2U; one slot per amplifier module
Specified Configuration: 1+1 redundancy with SWF-G2R-SX-134-S5S5
Gain Range: Nominal 10–40 dB; ±2.0 dB at minimum and maximum settings
Gain Step Size: 0.25 ±0.15 dB
Slope Control: 0–6 dB; pivot point at 2150 MHz; steps of 1 ±0.25 dB
Gain Flatness: ±1.75 dB full band; ±0.35 dB over any 36 MHz, at zero slope
Operating Modes: Power, Noise, and Compromise
Noise Figure: 9 dB typ.; 11 dB maximum, at maximum gain
Output P1dB: +29 dBm typ.; +27 dBm minimum, at maximum gain; performance varies with gain, frequency, and operating mode
OIP3 / OIP2: OIP3 +38 dBm typ., +36 dBm minimum; OIP2 +60 dBm typ., +58 dBm minimum; at maximum gain
Input / Output Return Loss: 14 dB typ.; 10 dB minimum
RF Output Detector: −23 to +27 dBm; ±3 dB accuracy
MTBF / Weight: Greater than 150,000 hours; less than 0.35 kg typ. per amplifier module

Key Features

• Designed for L-band 1+1 redundant amplifier systems.

• Fine variable-gain adjustment across a nominal 30 dB range.

• Positive slope compensation for frequency-response correction.

• Selectable modes to prioritize linearity, noise figure, or a balance of both.

• Compact, hot-swappable, single-slot amplifier module.

• Local and remote control through the compatible chassis, including touchscreen, Ethernet, SNMP, and HTTPS web access.

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

This listing covers one ALT-G2R-L1-131 amplifier module. The GENUS chassis, additional amplifier module, redundancy switch, RF cables, and other accessories are sold separately unless included in the quoted configuration. Performance figures above apply to the stated amplifier-and-switch configuration. No LNB powering is provided. Indoor operation requires a compatible parent GENUS chassis. Confirm the redundancy hardware, RF interfaces, and required operating point when requesting a quotation.