Wireless RF Modules and dongles for IoT | Coral RF

The N537BP is a high-performance Sub-1 GHz FSK radio USB dongle adapter combining Texas Instruments' CC1312R wireless MCU with the CC1190 RF front-end amplifier. Designed for maximum range and reliability, this dongle delivers exceptional +27 dBm output power while maintaining excellent receiver sensitivity of -112 dBm. With support for 868 MHz and 915 MHz ISM bands, it provides a complete RF-to-USB bridge solution for demanding long-range applications.

Key Features

Extreme Range: Up to 5 km line-of-sight communication at 1.2 kbps data rate
High Power Output: +27 dBm (500 mW) maximum transmit power with CC1190 PA
Multi-Band Support: 868 MHz (EU), 915 MHz (North America)
Professional Design: 4-layer PCB with TCXO for stable frequency performance
Flexible Antenna Options: Integrated PCB antenna + IPEX connector for external antennas
Industrial Grade: Operating temperature range of -30°C to +75°C
Development Ready: Debug pins exposed for custom firmware development

Technical Specifications

Parameter	Specification	Notes
RF Chipset	CC1312R1F3RGZ + CC1190	ARM Cortex-M4F, 352KB Flash, 80KB RAM
Frequency Bands	868 MHz, 915 MHz	Software selectable
Output Power	Up to +27 dBm	500 mW maximum
Receiver Sensitivity	-112 dBm @ 50 kbps
Data Rate	0.3 - 4000 kbps	Software programmable
Frequency Deviation	±10 kHz
Modulation	2-FSK, 4-FSK
Communication Interface	USB 2.0	Virtual COM port (CDC)
Physical Interface	USB Type-A male	Plug-and-play
Operating Voltage	5V ± 0.25V	USB bus powered
Transmit Current	500 mA (peak)	At +27 dBm output
Receive Current	15 mA (typical)
Operating Temperature	-30°C to +75°C	Industrial grade
Enclosure Size	45 × 19 × 8 mm	Plastic housing
PCB Size	37 × 17 × 7 mm	4-layer design
Antenna Options	PCB antenna + IPEX connector	External antenna compatible

Performance Data

Maximum Range: 5000 meters (clear line-of-sight, 3 dBi antenna, 2.5m height, 1.2 kbps)
Link Budget: 139 dB (calculated from +27 dBm TX and -112 dBm RX sensitivity)
Data Throughput: Up to 4000 symbols per second
Frequency Stability: ±1 ppm with integrated TCXO

Applications

Long-Range IoT Gateways: Connect remote sensors over kilometers
Wireless Meter Reading: AMI/AMR systems for utilities
Industrial Monitoring: Remote equipment monitoring and control
Agricultural Sensors: Field monitoring over large areas
Scientific Research: Environmental monitoring and data collection
Smart City Infrastructure: Street lighting, waste management, parking systems
Emergency Communication: Backup communication systems

Development & Programming

Debug Interface: 10-pin debug header for programming and debugging
Development Tools: Compatible with TI Code Composer Studio and IAR Embedded Workbench
Software Support: TI's SimpleLink CC13x2 SDK, RF settings calculator
Protocol Support: Proprietary protocols, Wireless M-Bus, 6LoWPAN (with custom firmware)
Example Code: Available for basic send/receive functions

Ordering Information

Model	Frequency Band	Output Power	Key Applications
N537BP-CC1312R-868M	860-880 MHz	+27 dBm	EU IoT, smart metering
N537BP-CC1312R-915M	910-930 MHz	+27 dBm	North America IoT, agricultural

Package Includes

N537BP USB Dongle
Quick Start Guide
Access to online documentation and example code

Regulatory Compliance

EU: EN 300 220, EN 301 489, EN 60950
US: FCC Part 15, FCC Part 90

Certification Status: Pre-scanned; final certification in progress. Pre-certified modules available upon request.

RoHS / WEEE: Compliant

Why Choose the N537BP Dongle?

Prototyping in minutes – Get wireless capability without months of RF design.
Field validation ready – Use as a portable tester for real-world link quality and coverage.
Production proven – Deploy as-is or customize for high-volume applications.
Developer friendly – Full access to CC1312R, no RF headaches.

Product Line Positioning: Find Your Fit

Feature Model	14dBm N534BP Dongle	14dBm N534EP Dongle	0.5 Watt N537BP Dongle	0.5 Watt N537EP Dongle
Core MCU	CC1312R	CC1314R10	CC1312R	CC1314R10
On-Chip Flash	352KB	1 MB	352KB	1 MB
Frequency	433/868/915 MHz	433/868/915 MHz	868/915 MHz	868/915 MHz

Core Value	High-Performance Custom Stack	Pre-Integrated Standard Protocols	High-Performance Custom Stack	Pre-Integrated Standard Protocols
Development Focus	Develop highly optimized, proprietary stacks.	Develop your application only, using pre-built, certified stacks.	Develop highly optimized, proprietary stacks.	Develop your application only, using pre-built, certified stacks.
Ideal For	Performance-critical networks needing maximum RF control.	Smart Utilities (AMI), Smart Cities, projects needing Wi-SUN/WM-Bus, or minimizing dev time & risk.	Performance-critical networks needing maximum RF control.	Smart Utilities (AMI), Smart Cities, projects needing Wi-SUN/WM-Bus, or minimizing dev time & risk.
Next Step	Learn More →	Learn More‍ ‍→‍	Current product	Learn More‍ ‍→‍

Simple Selection Guide

For full control & maximum range – Pick the N537BP (0.5W, custom stack). Ideal for proprietary long-range protocols.
For speed & reduced risk – Pick the N537EP (0.5W, pre-certified Wi-SUN/WM-Bus). Fastest path to production.
For basic range & custom stack – Pick the N534BP (14dBm).
For basic range & standard protocols – Pick the N534EP (14dBm, pre-certified).