TDH2

UHF High power serial modem

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

Key Facts

Functionality

Modems, Multichannel, Wideband

Band

Wideband

Frequency

433.925 - 434.565 MHz

Channel

Multi Channel

Frequency

UHF, 433-434MHz

RF Power

25mW / 50mW

RF Power

10–≤100mW

Data Rate

≤10kbps

Data Rate

≤10kbps

Operational Range

<100m, 100-200m, 200-300m, 300-500m

Operational Range

300-500m

Country

Australia, Europe, Far East, North America, United Kingdom

Two way

Yes

Data sheet

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

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