Wireless RF Modules and dongles for IoT | Coral RF

N455AS is a high‑performance, dual‑band LoRa transceiver module designed for license‑free long‑range communication. It integrates Semtech's LR2021 chipset with built‑in Power Amplifier (PA) and Low‑Noise Amplifier (LNA), offering +31 dBm (1.2 Watt) output power on both Sub‑GHz (868/915 MHz) and 2.4 GHz bands.

With excellent sensitivity and flexible frequency support, this module is ideal for professional LoRaWAN gateways, private networks, and applications that require seamless operation across both sub‑gigahertz and 2.4 GHz ISM bands.

📊 Detailed Technical Specifications

Category	Parameter	Specification
RF PERFORMANCE	Frequency Bands	Sub‑GHz: 860 – 930 MHz (868/915 MHz) 2.4 GHz: 2400 – 2483.5 MHz
	Max Output Power	+31 dBm at Sub Ghz +31 dBm at 2.4 Ghz
	Receiver Sensitivity	Sub‑GHz: –148 dBm 2.4 GHz: –135 dBm
	LoRa Data Rate	Sub‑GHz: 0 – 2600 kbps 2.4 GHz: up to 2600 kbps (with FSK/MSK)
	Modulation	LoRa®, (G)FSK, MSK, BPSK
	Frequency Stability	±2 kHz (Sub‑GHz), ±5kHz (2.4 GHz)
HARDWARE	Module Dimensions	36.0 × 24.0 × 3.0 mm
	Antenna Interface	50Ω IPEX Connector + RF pin (shared or separate – specify)
	Host Interface	SPI, GPIOs
	Package	SMD
ELECTRICAL	Digital/Analog Supply (VCC)	3.3V (Typical)
	PA Supply (VCC_PA)	4.5V – 5.5V (5.0V Typ.)
	Tx Current (Peak)	650 mA (@ +31 dBm)
	Rx Current	18 mA (Sub‑GHz) / 25 mA (2.4 GHz)
	Standby Current	15 µA
	Operating Temperature	–40°C to +75°C

🎯 Applications

Dual‑Band LoRaWAN Gateways & Concentrators
Multi‑protocol IoT bridges (Sub‑GHz + 2.4 GHz)
Industrial telemetry and remote monitoring
Smart city infrastructure (street lighting, parking)
Asset tracking and logistics
Emergency response networks

🛠 Development Support

Software Compatibility	Semtech official drivers + open‑source implementations (e.g., LoRaMac‑node, mbed)
LoRaWAN Stack Integration	Supports LoRaMAC‑node, ChirpStack, and other stacks with dual‑band adaptation
Development Tools	Standard SPI interface – easy connection to any host MCU
Documentation	Comprehensive datasheets, application notes, reference designs, and dual‑band tuning guides

Area	Details
Software Compatibility	Semtech official drivers + open‑source implementations (e.g., LoRaMac‑node, mbed)
LoRaWAN Stack Integration	Supports LoRaMAC‑node, ChirpStack, and other stacks with dual‑band adaptation
Development Tools	Standard SPI interface – easy connection to any host MCU
Documentation	Comprehensive datasheets, application notes, reference designs, and dual‑band tuning guides

📦 Ordering Information

Order Code

Core IC

Frequency Bands

Output Power

N455AS-868M-2.4G

LR2021 + PA + LNA

860 – 880 MHz (Sub‑GHz) & 2400 – 2483.5 MHz (2.4 GHz)

+31 dBm at 868Mhz

+31 dBm at 2.4G

N455AS-915M-2.4G

LR2021 + PA + LNA

910 – 930 MHz (Sub‑GHz) & 2400 – 2483.5 MHz (2.4 GHz)

+31 dBm at 915Mhz

+31 dBm at 2.4G

N455AS-433M-2.4G

LR2021 + PA + LNA

410 – 510 MHz (Sub‑GHz) & 2400 – 2483.5 MHz (2.4 GHz)

+31 dBm at 868Mhz

+31 dBm at 2.4G

⚙️ Custom frequency variants (e.g., 490 MHz, 868 MHz single‑band, or other ISM bands) and volume pricing available upon request.

📌 Notes

The dual‑band version (N456AS‑DUAL) includes two independent RF paths and requires separate antenna connections (IPEX for each band).
For 2.4 GHz operation, the module supports LoRa modulation (FLRC) and (G)FSK, enabling higher data rates for short‑range, high‑throughput links.