You are here: Home » Blogs » Technical Specification for GRQ-20-1000M-50W-21085-32VGaN-EN-485

Technical Specification for GRQ-20-1000M-50W-21085-32VGaN-EN-485

Views: 0 Author: Site Editor Publish Time: 2026-06-24 Origin: Site

Features:

Ultra-Wideband 20–1000 MHz Coverage: Single-stage GaN amplifier delivering ≥47 dBm (50W) output power across a 50:1 frequency range.
Precise Step Attenuation: ≥25 dB gain adjustment range with 1 dB step linearity at 10 dB, 20 dB, and 25 dB attenuation settings.
RS485 Remote Monitoring & Control: Real-time queries for module status, over-temperature alarm, amplifier temperature, and forward output power, plus remote on/off and gain control.
Comprehensive Protection: Over-temperature alarm/shutdown at +85°C with auto-recovery at +65°C (software configurable); output must not be left open-circuit (no isolator).
Compact & Low Power: Space-saving 210 × 85 × 25 mm housing with dual SMA connectors, drawing only ≤5A at 32V, and supporting –40°C to +55°C operation.

CW Signal Testing
Wideband power detection accuracy: ±3 dBm
32V, GaN, dual-wire power supply
External EN (Enable) control:
1. High level (DC +1.8V to +5V): Disable (amplifier off)
2. Low level (DC 0V to +0.5V): Enable (amplifier on)
3. Floating (no connection): Default on
No isolator – output must not be left open-circuit

Items:	Quality Standards
Operating Frequency Band:	20–1000 MHz
Max Gain:	52–57 dB (over full operating band)
Maximum Output Power:	≥47 dBm
Maximum Input Level:	+5 dBm
Gain Adjustment Range:	≥25 dB
Automatic Gain Control:	None
Gain Adjustment Flatness:	At 10 dB attenuation: 1 dB step At 20 dB attenuation: 1 dB step At 25 dB attenuation: 1 dB step
Operating Voltage:	32V, GaN, dual-wire supply
Operating Current:	≤10 A
VSWR:	≤2:1 (to protect test equipment; output not tested)
Operating Temperature Range:	-40～+55℃
Over-temperature Protection:	Shutdown at +85℃; Recovery at 65℃
Baud Rate:	19200
Monitoring Function:	RS485 interface communication Settings: On/off, gain Queries: Module status (including PA status, over-power alarm, over-temperature alarm), PA temperature, PA ATT value, downstream output power Over-power alarm: Triggered when power exceeds max output power +2 dB Over-temperature alarm: Recommended threshold at +85℃; Alarm and shutdown when temperature exceeds +85℃; Recovery at 65℃ PA temperature detection: Range includes but not limited to -25℃～+85℃, accuracy ±3℃ Downstream power detection: Total power detection, multi-tone signal test, range >20 dB, accuracy <±3 dB
Connectors:	2x SMA connectors
Mechanical Dimensions:	210 × 85 × 25 mm

External EN Enable:

High level (DC +1.8V to +5V) – Disable (amplifier off)

Low level (DC 0V to +0.5V) – Enable (amplifier on)

Floating (no connection) – Default on.

Refer to the outline below for reference; actual dimensions are 230 × 110 mm.