TDH2-433-9 : UHF High Power Multichannel Serial Modem

Technical Summary 

• Operating frequency: 433.925MHz (default) 
• Modulation: 16kbps bi-phase FSK 
• Supply: 5V at 50mA transmit, 22mA receive/idle 
• Transmit power: +14dBm (25mW) 
• Receiver sensitivity: -105dBm (for 1% BER) 
• 32 byte data buffer 
• Adjacent channel rejection: 60dB @ ±320kHz 

TDH2-433-9 : UHF High Power Multichannel Serial Modem

TDH2-433-9 Multichannel Serial Modem

• UHF Wideband FM Radio Transceiver
• Frequency: 433.28~434.56MHz
• Data Rate: 9600bps
• TX Power: 25mW
• RX Sensivitiy: -105dBm
• Country: AUS/NZ
• Radiocommunications (Low Interference Potential Devices) Class Licence 2000

Overview

The TDH2 is a 9600baud half-duplex multi channel OEM radio modem with a power output of 25mW. It is a 100% pin-compatible drop-in replacement for the Radiometrix TDL2A and can be used to replace the TDL2A in applications where greater radiated power is desired. TDH2 acts as a transparent serial cable to attached host. TDH2 is an intermediate level OEM radio modem which is in between a raw FM radio module like BiM2 and a sophisticated OEM radio modem like SPM2. It takes care of preamble, synchronisation, bit balancing and error checking along with automatic noise squelching

Features

• High quality, stable crystal reference
• Low noise synthesiser / VCO
• Carries ASCII and RTU MODBUS messages
• SAW front-end filter
• Multi-stage ceramic IF filtering
• Single conversion superhet
• Serial modem baud rate at 9600bps (half-duplex)
• Addressable point-to-point
• 5 serial select wideband channels
• Data Present indication
• Fully screened. Low profile
• Available as TDH2T transmitter and TDH2R receiver for one way communication
• Conforms to Australian/New Zealand AS/NZS 4268:2003

Applications

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