LNM2H / LNM3H
High Power Narrow Band Category 1 Radio Modem
The LNM2H radio modem module offers a 500mW RF output 19200 data link with 3.3V TTL UART interface. It meet meets the ETSI Category 1 high performance receiver specification to be used where the operation of a SRD may have inherent safety of human life implications
Features
- Standard 458MHz (UK), 866MHz (India), 869MHz (EU)
- Available from 160MHz to 915MHz
- 12.5kHz / 25kHz channel spacing Narrow Band FM Multichannel
- Data rates up to 19200kbps
- ETSI EN 300 220-1 Category 1 High performance level receiver
- Point-to-Point, Point-to-Multipoint
- Store and Forward Repeater Mode with Dual Addressing to extend operating range
- Whitening of the data by XORing with a 9-bit pseudo-random (PN9) sequence
- 2-byte CRC checksum
- Digital Received Signal Strength Indicator (RSSI)
- Range Test Mode
Applications
- Safety-critical wireless applications such as social alarms and healthcare monitoring
- High-end security and fire alarms
- Lone Worker Alarms
- Industrial/Commercial Telemetry and Telecommand or Non-specific SRD usage
- In-building environmental monitoring and control
Technical Summary
- Size: 47 x 34.5 x 7mm
- Operating frequencies: CH0:458.525, CH1:458.550,…CH15:458.900MHz
- Supply range: 5V DC
- Current consumption: 280mA TX
- Current consumption: 40mA RX
- RF baud rate: 300, 600, 1200, 2400, 4800, 9600, 19200bps (default).
- User baud rate: 300, 600, 1200, 2400, 4800, 9600 (default), 19200, 38400bps.
- Flow control: RTS/CTS, None (default)
- Modulation: 2-level GFSK [Binary], 4-level GFSK [Quaternary] (default)
- Transmit power: +27dBm (500mW) on 458MHz or +26dBm (400mW) on 869MHz
- 32MHz TCXO Reference with ±2.0ppm frequency stability over -30˚C +85˚C
- SAW front end filter