VHF Narrow Band FM Multi channel radio modules

The TX1M transmitter and RX1M receiver modules offer a low power, reliable data link in an industry-standard pin out and footprint. This makes the TX1M/RX1M pair ideally suited to those low power applications where existing wideband modules have insufficient range, or where multi-channel operation is needed in VHF frequency.

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• Conforms to EN 300 220-3 (radio) and EN 301 489-3 (EMC) standards
• Any custom band between 135MHz and 175MHz with 3MHz frequency range
• Data rates up to 5 kbps for standard module
• Usable range over 1km
• Fully screened. Low profile
• Feature-rich interface (RSSI, automatic noise squelch, analogue and digital baseband)
• Incorporate a 1200baud dumb modem
• Re-programmable via RS232 interface
• Low power requirements

• Handheld terminals
• EPOS equipment, barcode scanners
• Data loggers
• Industrial telemetry and telecommand
• In-building environmental monitoring and control
• High-end security and fire alarms
• Vehicle data up/download

Technical Summary

• Size: 59 x 38 x 7mm
• Operating frequency: 135 - 175MHz
• 128 serial select or 8 parallel select channels.
• Transmit power: +20dBm (100mW) nominal
• Supply range: 4.5V - 15V
• Current consumption: 110mA transmit, 13mA receive
• Data bit rate: 5kbps max. (standard module)
• Receiver sensitivity -118dBm (for 12dB SINAD)
• blocking -85dB